Talk:CHDK/Suggestions

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It seems that some people want to use this wiki to share their ideas and suggest new features for the CHDK firmware. I think it may be good to collect these posts on a dedicated page. So, if you want to share an idea with us, click the post a new comment button at the top of this page and write away.

Please also have a look at the already Frequently Suggested Features.

How about ... (moving mine from another area)

 * CHDK Wish-List

I've read some posts that had some good ideas, and found some things that I too would like to see CHDK have in the future. Even though CHDK is already a remarkable advancement/improvement, there's always room for more. :)

Suggestions / Wishes:

What about to make codepage to be the topmost part of the .lng file and then set it automa[tg]ically when setting language?

A uBASIC script command to click the "Movie Record" button on the S3 IS. DONE! :-)

A uBASIC script command to trigger audio-only recordings.

A uBASIC script command for "zoom_to", where you could set it to quickly zoom to a numerical step. The "zoom_in" and "zoom_out" commands are very slow to run in steps. Done! (Build 119's set/set_rel/get_zoom command!)

The histogram having a small grid to show full f/stop regions.

How about an alternate rule-of-thirds grid for the golden ratio. Done! :-)

The time display to show AM or PM for us North Americans. :-) To save space it could be just a dot next to the 12-hour number for PM, it's how lots of clocks do it, we're used to that.

Focus distance and hyperfocal readings to reflect the feet/inches setting of the camera instead of just metric. (some of us still can't wrap our minds around metric estimates, we're old and gray. :) )

More colors to choose from for customizing features, so many are just repeats. And being able to use some of the transparent ones for special effect filters. How about a built-in transparent gray gradient for those over-exposed skies and under-exposed foregrounds?

An audio record-level meter during movie and audio recording modes that shows clipping. (now that would be so cool)

I like OwenJim's rebuilds of CHDK, where I'm able to keep the Blend Histogram showing at all times, as well as removing some redundant info, like the SCR and EXP alerts. The truncated Hyperfocal display option is nice too, but it's nice to have the fuller info displayed at times too.

I read somewhere of people wanting some preset frame overlays for some favorite printing dimensions. I thought that was a neat idea. Making transparent borders for composition assists. Done! :-)

What do you think? Are any of these worth considering for future projects?

And a bug that needs fixing for the S3 IS builds, the Focal-distance doesn't update in Manual Focus, MF, mode like it used to. You have to half-press the shutter to get it to refresh the F value each time you change manual focus.

Keoeeit 10:26, 29 May 2007 (UTC)

("Anon" added the following, I'd know better than to ask this. :-) Keoeeit 01:42, 20 June 2007 (UTC) )

A script to implement a kind of B-pose (I don't know if it's possible but till 5 minutes or so would be great) Maybe it would be realized by setting a long exposure time (say 5 minutes?) during which a second shot will stop the capture. (Just like b-pose mode for DSLR cameras: first shot starts capture, second shot stops it)

Intervalometer extensions
Hi, I suggest modifying the intervalometer feature: - the total number of shots should be unlimited (just keeps taking pics until it fills up the card...) Currently this is arbitrarily set at 100. - the time between shots should be in SECONDS not minutes (with a minimum of 10 seconds, say) I'm no expert but it seems to me that these two features should be do-able simply by modifying certain constant values in the firmware. Thanks for reading. ryan.elt@gmail.com
 * No problem: Keo wrote a nice Ultra Intervalometer script which does what you want. I also like to use it. --Harvester 12:51, 29 May 2007 (UTC)


 * Be sure to get the latest version, I had to rewrite some routines to compensate for a problem when choosing 1 frame, a delay to 1st shot, and "endless" turned on (it was taking 2 shots instead of 1 and screwing up the total cycle-time count).The "Delay 1st Shot" time-setting being used as your time between single but endless shots. If you are using an S-Series camera you might be more interested in the OMNI Intervalometer script. It has the same features but also includes options to use a combo of video and/or still-frame images in your intervalometer sequences. Keoeeit 00:17, 1 June 2007 (UTC)

Bit late getting back I know, but... thanks to all, I've downloaded CHDK and I am now playing with it and timelapsing away like a very happy thing. Perhaps this is not the place to ask, but for some reason my PC card reader refuses to read my 2GB card yet it reads all my other, smaller cards OK. The S3 IS reads & writes & formats all my cards just fine. Erm, where would I go for help on this? Thanks, ryan.elt@gmail.com.


 * Not all card readers can read the larger cards. HighInBC 17:21, 7 July 2007 (UTC)

About dead/hot pixels on the ccd
I know that one can send their camera backed to Canon to have the bad pixels mapped out but what a hassle. Too bad, Canon does not provide an in camera mapping program similar to Olympus so that the mapping could be done by the owner.

I hope CHDK can provide an mapping program to re-map the dead/hot pixels. Thank you very much.

Email: doanythingcn@yahoo.com.cn


 * It's not the fix that you ask for, but there is a very nice freeware tool available at MediaChance's Digital Camera Tools page. Look at the one called "HotPixels Eliminator". Check out their other free tools there too (just the first 3 or 4 are shareware, the rest are freeware), some of them are very very nice. Keoeeit 00:40, 1 June 2007 (UTC)


 * There is a new option in Build #144 (and later), in the RAW Parameters menu, turn "Noise Reduction" to always ON. This will perform a dark-frame subtraction at every shutter speed, effectively removing any hot-pixel artifacts. This works for your JPG files whether you have RAW saving turned on or not. It adds a slight delay to every shot (you will see *busy* briefly flash in your EVF/LCD each time) but it's probably a small price to pay for completely clean images.


 * What about a script command to shoot only a dark frame? Would it make any sense for lightning photography? User could shoot a dark frame e.g. every 2 minutes to use for dark frame reduction afterwards to get good noise reduction and maximum open time for shutter.


 * Oooo, nice idea! If there was a shoot_df or dark_frame command or something like that. It could be incorporated into scripts that need this. I wonder if that could be done? I was testing my sensor noise tonight to see what I might be up against, and I found that even 15-second exposures are surprisingly quiet even after 5 minutes of shooting. And the few scattered lighter pixels all but disappear at shutter speeds of 2-seconds or faster. Just a few warm ones, even in the RAW images without any interpolation at all. (I lucked out big-time on the sensor that got dropped into my camera. A good batch of chips that day.) So for lightning photography I won't have any problem doing one dark-frame every 5-10 minutes or so, or even if I forget to. But for astrophotography an inserted dark-frame every now and then could be important. I don't want pixels acting like undiscovered stars and asteroids about to impact the earth and setting off a wave of hysteria and end-of-the-world rumors. :) In order to prevent camera movement it would literally have to be the "hat-trick" technique. Holding something over the lens but not touching it. A "dark_frame" command would eliminate that always-awkward solution.

Longer shutter time?
Will this hack, or is there a script that will allow the shutter time to be longer than the S3's 15 or 30 second open time? Thanks


 * Not possible. This would require a rewrite of the original camera's firmware. CHDK only takes advantage of existing features in the original firmware.

Enable remote capture on an A610 A630?
Is it possible to modify the firmware so that an A610 A630 can use the remote capture feature (like the A620 A640)?

How can I change size OSD fonts ??


 * You can change the size of the OSD fonts by choosing a different Menu RBF font. No idea about remote shooting though. Maybe it even has nothing to do with the cam firmware, but with the remote shooting PC software which does not support certain cams. --Harvester 18:15, 4 June 2007 (UTC)


 * I think it's not a limitation of the software, even a third party software like PSRemote is not able to use the A610.


 * This is weird due to the fact that A630 and A640 are practically the same camera,
 * the only difference is that the A640 has a 10Mpixels sensor instead of 8, probably
 * we should find a way to "advertise" on the PC the cam as a supported one. -- gabriele 14:33, 14 August 2007 (UTC)

There is a bug. If you switch the screen of A630 of 180 degrees the lcd is all white. The only way you can watch your lcd is to put it back to the regular position.
 * It's not a bug, it's a feature. See Flash-light option. --GrAnd 15:47, 12 August 2007 (UTC)

uBASIC: wrong loop FOR/NEXT
Sample script

@title Test FOR/NEXT rem --LOOP OK-- x = 5 gosub "loop" rem -LOOP NOT OK--- x = 0 gosub "loop" end :loop print "-" print "Loop from", 1, "to", x   for i = 1 to x        print "value of i =", i    next i    return

Output of script >>> -   >>> Loop from 1 to 5 >>> value of i = 1 >>> value of i = 2 >>> value of i = 3 >>> value of i = 4 >>> value of i = 5 >>> -   >>> Loop from 1 to 0 >>> value of i = 1             <-- NOT OK

thanks you for CHDK!!!

Danilo


 * What should happen in your opinion? I think "for i = 1 to 0" makes no sense. --Harvester 04:30, 2 June 2007 (UTC)


 * Actually, the body of the second 'for' should never be executed. But currently 'for' statement always evaluates his body at least once, even if the condition is false in the begining. uBasic has this bug 'by design'. So, it's quite hard to fix this (but it's possible, of course). --GrAnd 05:54, 2 June 2007 (UTC)

According to my experience with other languages, I was expecting the body of FOR not to be executed. The check to decide if closing the loop, it should be at the beginning of the loop (FOR) and not at the end (NEXT). For the moment I solved: if x < 1 then goto "label1" for i = 1 to x       print "value of i =", i    next i    :label1 Danilo

uBASIC: new keywords do/enddo
I suggest a new keyword which simplifies the program writing.

Use like this:

if a = b then do       let .....        print ..... if c = d then do            let .....            click ....            print ..... enddo else do           let .....            print ..... enddo enddo

if x > 0 then do       for i = 1 to x           print "value of i =", i        next i    enddo

Thanks you for CHDK!!!

Danilo

Better video codec
I mean, lower bitrate in 640x480 video recording.
 * I think this is not possible without changing the original firmware. And even if you would do this, I'm not sure if the Digic II chip is fast enough for this. --Harvester 12:25, 3 June 2007 (UTC)

Hide Icons / Info during playback
Would it be possible to hide all OSD info when in basic playback mode (photo only)? Right now, my battery icon is on in that mode and is a little distracting.

Also, can anything be done to include ISO (in the normal field) in the EXIF data direct out of the camera?

Thank you!


 * Not quite your question, but there's a shortcut for turning the CHDK OSD off: half shutter press + right. --Harvester 18:15, 4 June 2007 (UTC)

Show free card space on OSD
It would be very useful if the OSD could show the remaining space on the card, in units of MiB (since I think that's what the camera already uses, e.g. next to the format option). This would be especially useful when shooting in RAW mode, since RAW makes the remaining pictures count pretty useless. In fact, the position of the free space display could be on top of that counter by default.


 * Yes, that would be nice :) --Harvester 18:15, 4 June 2007 (UTC)

Custom text in image
Some caption, signature or date from textfile.

Regards

zyga


 * I think this would be complicated to implement. The CHDK perhaps must bring its own jpeg processing engine or one must find a way to make complete use of the original Canon engine. So, I think an implementation is unlikely. I think it would be easier if you would use a batch processing tool on your PC for this. --Harvester 18:15, 4 June 2007 (UTC)

Zoom during video recording
Can CHDK enable the optical zoom feature during a movie recording?

Thanks a lot...


 * No, at least not at the moment. Besides, the zoom motor would make terrible noises in the audio part, the zoom would be very fast with few steps in between (in most movies you see no zoom during scenes, or slow zoom) and zooming perhaps also would mean that the focus have to be re-adjusted (another thing which is not done during filming right now). So, I think an implementation is unlikely. --Harvester 18:15, 4 June 2007 (UTC)


 * This is however possible on the S-series cameras using a script, I just tested to see if this would work and it does:

rem Zoom Vid Test @title Zoom Vid Test

click "video" sleep 5000 press "zoom_in" sleep 2000 release "zoom_in" sleep 5000 click "video"

end
 * Keoeeit 12:29, 7 June 2007 (UTC)


 * Since build #129 it is possible for A-series too. See Zoom-Video script. But it seems still useless due to noise sound during zooming. --GrAnd 06:49, 21 June 2007 (UTC)

Fill Flash
Is it possible to have an automatic fill-in flash? I'm refering to something like a daylight ballance fill flash.

It really gets anoying when I attempt to use a fill in flash and need to constantly return to the FEC on my Canon Powershot S3-IS and manually change things until I finally get things set right.


 * Someone wrote a nice fill-flash bracketing script that I collected, but I don't remember where I got it and I don't have their permission to repost it. A fill-flash bracketing option might work in some instances where the subject is still enough while the script is running for multiple-shots. If that would help, you or someone could write one (and post it?). Otherwise, as with all other suggestions, you have to remember that CHDK cannot alter the built-in features of the camera's original firmware (other than the on-screen display features in the EVF or LCD). Or in the case of command-buttons, re-map them to alternate uses of the already available built-in features. Keoeeit 03:56, 6 June 2007 (UTC)


 * I've written such a script, but it is rather clumsy with lots of clicks and sleeps and so on. It's also written for the A610 and I think one would have to adapt it for the S3. If somebody wants to repost it or write a better version or something like that: please, feel free! :) --Harvester 05:48, 6 June 2007 (UTC)

BULB (moved from another area)
Is it possible to put BULB exposure time feature into CHDK? It would be really a great improvement! For instance for catching thunderbolts or photographing in deep darkness (when you need times like 30" or even 1 min) If it's possible, please put BULB into the new version.


 * There isn't any way to extend the camera's own built-in limitations for exposure lengths. But you can use CHDK to run one of the many intervalometer scripts. If you set your camera for 15 second exposures, and unlimited number of shots with an intervalometer script, the shutter will be open for 15 seconds for every ~30 seconds. Since lightning flashes are random anyway, you'll still have a 50/50 chance of capturing one during each exposure. Even with another digital camera that I have that allows for 30 second exposures, I've not found any greater chance of capturing a lightning bolt on that longer exposure. You could hold the shutter open for 5 minutes and not get a lightning flash. If you really want to do it right, then get an old film SLR for its Bulb setting. Then you can use very low 25 ISO (ASA) film-speeds and very small f/stops, far beyond what any digital camera can do, to ensure you can keep the shutter open for as long as possible without overexposing the scene, and still capturing lightning flashes. There are some things that digital cameras are not your best option. Another would be a meteor shower, for similar reasons.
 * Here's a lightning flash capturing tip for you though, watch the lightning flashes, start counting when you see a strong one until you see the next strong one. Now apply that to when to start your shutter. After you see a strong flash start counting, then press your shutter toward the end of the count. Since storms build up their charge just like any capacitor, and since the area in question, and discharge length to the ground are somewhat constant, there is a sort of random-regularity to the discharges. It's no guarantee, but it helps to try time your shutter release to capture the next strong flash. (If you aren't using a continuous intervalometer setting that is.)
 * Keoeeit 04:25, 29 May 2007 (UTC)


 * Update - I saw it mentioned in the FAQ section of how to emulate a BULB mode using scripts, and I think that is a great idea. Especially for something like taking lightning shots. Where the actual lightning flash is of such short duration and you could miss it during a dark-frame subtraction routine. Using the new press and release commands I'll write a small "Lightning Photography" script and add it to the scripts section.

High angle LCD feature
Panasonic camera's have a high angle LCD feature to improve visibility when holding the camera high. This can simply be done by overlaying a light gray transparent colour over the whole display, colour 0xC0 from 'draw palette' works pretty well for instance (in picture taking mode). PTT 10:35, 7 June 2007


 * The S3 with an articulating display must be using a different LCD type than yours. There's no need for this on the S3, but I thought I'd try it anyway to see what effect it would have, it just made it worse. This is not to say it doesn't work better on other models though. I know from using different LCD displays in the past how a tint or contrast change can drastically alter the low-angle views. Just thought I'd mention that if this is a future feature, that the S3 (or other articulating LCD models) won't be needing it. :-) Neat idea though for those that could use it! (if it actually helps) Keoeeit 02:37, 8 June 2007 (UTC)


 * I indeed own a A710 IS (and yes, I do mis the flip and tilt LCD screen very much), it also only works when looking from beneath, when looking from the upside it makes it only worse, so maybe the screen on the S3 is mounted 180 degrees. Also the colour palette is different in play mode (where this feature isn't useful). On the S* and A6*0 there is indeed no need for this feature, but for the A5*0 and A710 it is surely useful. PTT 14:01, 12 June 2007 (UTC)

More converter options
Make it possible to set the zoom factor of the converter manually, when using a third party converter or digiscoping it's not possible to set the right zoom factor because only there are only three canon options (0.7X, 1.75X and macro) in the menu. I think it's only important for image stabilisation.

White balance tuning
Make it possible to tune the manual white balance like many DSLR's.

Some really firmware changing features (a.k.a. impossible)
Better audio quality (than 8bit 11kHz) (+ hardware mod: external microphone)

Refocus during film, maybe this one is even possible (yes, it will give audio noise)

Remote control, triggered by hand clap (wouldn't that be fancy?)

Fast shooting mode: 2 or 3 frames right after each other, no direct raw conversion/compression (how big is the buffer?). Usable for bracketing, dual flash/no flash shot. Maybe it's even faster to use no shutter, like in movie mode?

m-p-bracketing for Canon A710 IS
Hello,

The user script for M-p-bracketing doesn't work on my A710. The two first lines :

REM click "erase" (Originally here, but removed because I can't see why it's necessary) REM click "erase" (same case. What purpose do these statements serve?)

must be changed to this:

click "erase" click "erase"

Now, it works on my A710

BUT

I would like to do exposure bracketing without focusing after every shot. Is that possible? All the bracketing scripts don't work on my A710, except the m-p-bracketing after the removing of the "rem".

Thank you in advance

Best regards

Eddy

Non-CHDK Request - Video Input Device-Driver?
A program called Cam4you Remote has features to automatically take videos or still-frames when there's motion detected in the field of view of Canon cameras (remote-capture capable ones) hooked up to the USB port. In order to do this it uses the video-signal from the EVF display (no icons or anything showing in the display, all the zoom, white-balance, and other features are operable through PC control). I boot up this program, and then using the screen-capture options of WebCamMax I am able to use my S3 IS as a webcam. Using Cam4you Remote's advance video-processing and camera-option features I am able to use the zoom, white-balance, set brightness, contrast, even saturation and hue, or gray-scale the image as a video-input device (with WebCamMax's screen-capture overlay utility). Since Cam4you Remote is not using the CCD signal (just the EVF display) it doesn't seem to overheat the camera for extended use or anything.

What are the chances that you smart people that have made CHDK can write a video-capture driver to make the S-series and A-series cameras act as a video-input device? Granted the resolution will be limited to the EVF resolution, but it's still an exceptionally nice image. Considering that I can use the remote-zoom, white-balance, and exposure settings on it (as in Cam4you Remote) it could be nice added function to everyone who owns one of these cameras.

If you are looking for another project to do when you need a distraction from CHDK on occasion, this would be a nice one!! :-)  Keoeeit 00:34, 9 June 2007 (UTC)

p.s. Part of the reason I ask, is that WebCamMax has a fun face-detection algorithm in it. It uses this to track a face and automatically resize and position an overlay of funny glasses, hats, wigs, and things on any face that it sees in the video signal. This feature in WebCamMax only works with an actual video-input device, it can't use it in the screen-capture overlay mode. I can play with this with a web-cam, but not my S3 IS. :-)

JPEG2000
Add support for JPEG2000 (Directly from the RAW data). In case there is a preformance problem with it, you can consider to do it in two step. 1. Copy the image to a raw file in a temporary direcory. 2. When the camera is not in use, convert the files in that direcory to JPEG2000

Improvement feature on CHDK
How about having a feature which allows the saving of all user parameters (for the OSD layout and the visual settings of CHDK) into an independent file? This file can then be copied into any additional SD cards for use on the same camera.

The benefit of this is the user will not need to manually program all the settings everytime he buys a new SD card. All he needs to do is to 'recall' the saved settings from that file. This extra menu option should be just after 'Restore Default settings' called 'Load User Settings'.


 * Hmm... I do not understand why you just do not copy CHDK/CHDK.CFG file or whole CHDK folder from an old SD-cart to the new one? --GrAnd 12:08, 12 June 2007 (UTC)


 * You're right, GrAnd! I didn't know you could copy & use that file on another SD. How about putting this info in our FAQ section? It would be useful for newbies.

Accelerating Script-Parameter Number Input
With some of the new features like set_focus, the input being in mm only, it will become rather difficult to set focal distances of something like 58 meters. When the user has to scroll through 58,000 numbers to get there.

I propose that when you hold down the left/right buttons that as soon as the number reaches 10 it starts to increment by 10's, then when it reaches 100 it starts to increment by 100's, and then again for 1000's.

Otherwise it's going to eat up 4 of the 10 user-available variables for scripts. With only 26 variables to work with in-total this is going to limit what can be done otherwise.

Or can you increase the number of @param variables and/or increase overall variables to 2-letters?

I was thinking about working on an OMNI-Bracketing script (mentioned on Scripts Page 02 discussion), but I can see it won't be very easy to do, or nearly impossible, with the allowed variables the way things are now.

(And ... thanks again for the great new features!)

Keoeeit 08:53, 13 June 2007 (UTC)

Vertical Panorama?
What I really miss wrt to my small Pentax 43WR camera is the ability to select also vertical direction in stitch assist (landscape position). In the camera, only horizontal directions (left/right) can be selected. The ability to use vertical direction is most useful in taking a photograph (or panorama as you like) of eg a tower or within a gorge!

Any ideas whether this is possible?


 * Which camera doesn't support this? In my S3 IS I already have the option of sequencing up or down, and left or right, and then a 4-panel layout. But even so, I don't think it could be done, because I'm pretty sure the panorama stitching assist is an integral part of the original firmware. CHDK has never been able to touch that, it can only help to automate already existing functions. You really don't need this though, I've been taking panorama photos since my Fuji Finepix (1600x1200) days. It's pretty easy to remember where you left off on the last frame, just make sure they overlap by about 1/3rd to 1/5th each time. Come to think of it, it's so much easier to just do a panorama by eye-sight instead of using stitch-assist that the last 3 times I made a panorama I totally forgot my camera had that feature and I never even used it. I guess I could try it sometime. But all that futzing around with a mode-dial to get to something I can do freehand seems like a waste of time. Plus, when I did test stitch-assist when I first got the camera, the overlap was so great from one frame to the next I felt like it was wasting valuable image real-estate. I like my panorama panels to contain more image than the camera's stitch-assist overlap takes away. They really should allow a person to set how much overlap they need and want. But I digress. Keoeeit 01:57, 20 June 2007 (UTC)

Well, in my A640 I only got the option of moving left or right. I just read the (advanced) manual again and there also only left or right as a moving direction is stated... Perhaps I need to get out op P mode or something? Too bad it is not something that can be made possible using CHDK. Thanks for your comments and ideas though!

Any advantage to becoming a full wiki?
"Scratchpad is a place to test wiki ideas before you launch a full wiki, and it's a place for small collaborative projects that don't need a whole wiki." IS there any advantage to becoming a full wiki??

and also, Russel_Sprouts wrote: > CHDK is BIG NEWS and the userbase is certain to keep growing. > We need our own an english-language forum, with: > -- separate threads for each individual script > -- ability to distribute ready-to-run *.bas files as post attachments > -- benefit of having the availability of a private messaging system > > There's an established Powershot user forum, running vBulletin, here: > http://forums.canonphotogroup.com > If someone inquired, I expect the sysop would add a CHDK subforum > (or even a section, of multiple subforums) for us. -- Don


 * Good idea, but .... there's a problem with these holier-than-though privately owned forums. Not saying the one you suggest is like that, never been there before, and going on past experience with other Canon forums, I have no desire to join it either. But other's I've been on the owners have been rude and MOST disrespectful, to say the least. I have gone out of my way to help many many people on one forum with CHDK related issues, then the owner chastised me for dealing with an idiot that was becoming a pest and a stalker, so I tried to delete all MY posts that were of great benefit to everyone to show him that I wouldn't put up with being abused like that. What did the owner do? Banned my account then he reinstated ALL MY POSTS that I WROTE, stealing my hard work for his own gain! No thanks. I have no intentions of helping self-serving people that are like that. You might want to start a USENET group though, where others cannot access your posts or claim them as their own. If you do it in the alt. hierarchy then you could even add attachments to your posts. But creating a usenet group and have it propagate to all the servers can take months. Plus not many people even know how to even access them let alone use them. Best bet is this Wiki, and the discussion pages used as a forum, just as you are using it now. Keoeeit 02:25, 20 June 2007 (UTC)

Field of view calculator
I would be very helpful when shooting mosaic series if the camera would tell you the vertical and horizontal field of view in degrees when zoom is adjusted. This will tell the photographer how much adjustment in the camera's angle between shots is needed. HighInBC 17:37, 16 June 2007 (UTC)


 * I think this could just as easily be done with a quick script. Just enter  mode and press the shutter button. The script could read the zoom setting with a get_zoom x command and print back the H/V FOV. Then just exit  mode to take your image. It's just an extra key-press or two to get it this way. The display is sorta cluttered already if you enable ALL the elements possible. Care to write one and submit it to the pages? I wonder how it could be done. I recall GrAnd was having a problem with the DOF calcs, in that the S-series there was a problem with the zoom number 0-128 wasn't linear. Might almost have to test it by photographing a scale at each zoom step and working the math backward for true FOV.


 * I like this idea, as OSD or script, either way. But as I said, with so many things already available to display in the viewfinder ... if this (or others like it) were done, there'd need to be a way to toggle them on or off, being able to toggle-off parts of earlier OSD elements to make room for new ones. Keoeeit 01:30, 20 June 2007 (UTC)

The zoom values from 1-128 on the s3 IS do indeed seem to describe curve for the field of view. I will make a script that takes a picture at every zoom level and then run see if I can see a pattern. I could easily make a bezier curve to look it up on, but the .bas mathematics are very limited and not suited to rendering curves. If all else fails I could just make a 128 element lookup table. As for the feature cluttering the display, I was thinking it could replace focal length when activated. Another thought I just had is that if the focal length(so like 14.2mm instead a number from 1-128) itself was known to the script it would be easy to calculate the FOV based on the sensor size. HighInBC 14:15, 20 June 2007 (UTC)

help offering, for a canon A550 port
hi, I own a new canon A550... I offer my help in porting the code to this camera... I mean, I don't know where to start, but I would willingly follow any instructions/suggestions (I have knowledge about programming/*nix/binary editing/"not too hard" reverse-engeneering)... I haven't found the dumper that seems to be once available in the past (http://vitalyb.mail333.com/hdk/dumper/)

Even just the "raw" feature would be great...

for any contact: idleloop*at*hotmail.com

bye

Named parameter values
It would be nice to have named parameter values.

Example:

@param a Macro mode @default a list "normal" "normal","macro","super"

would let the user decide between three named values, with "normal" as the default. The variable would actually be set to 1, 2, or 3 based on the position of the parameter selected.

This would allow people to script past things like manually entering a focal range of 12.8m in mm, instead a series of preset positions could be made available. HighInBC 16:25, 17 June 2007 (UTC)


 * Another neat idea, but I think this could be done in a script with the new wait_click and is_key x commands. I was going to implement something similar in my OMNI-bracketing script (which I've since stopped working on until the gurus work out the focusing steps and what they mean). You could have them select an option right in the viewfinder while the script is running. If you just want to scroll through some options then have it wait for a "right" key, and every time they press it it increments a variable like a=a+1, if a=2 (for example) then a subroutine or setting for a=2 would be used in the script. Cycle the option numbers by just using a script line of, if a=4 then a=0, to start it over again. Each time they click the right key it would print to the viewfinder console what selection they made. This method also circumvents the 10 param variable limit for user-input. Just another way to go about it. I almost like this better than setting it beforehand when you first run a script, because the option selections are right in the viewfinder while you are taking photos, rather than having to remember what you set before running a script. Just my 2-cents on the issue. Keoeeit 01:39, 20 June 2007 (UTC)

Zebra mode superimposed on existing OSD and battery icon
It would be nice if the zebra mode did not cause the existing camera OSD (shutter speed, aperture, etc.) to disappear when uder/over exposed areas are indicated. At least in the A610 zebra mode and camera parameters cannot appear at the same time.

Also nice would be if the battery icon is not shown during playback mode. It is distracting. Speaking of battery icon, when the screen display is mirrored (such as when turning the screen towards the front for self-shooting, the battery icon is also mirrored. It shouldn't.


 * When in playback mode, just enter  mode, half-press the shutter button and press the right key, you can toggle the OSD icons off and on this way. I've seen others suggest that reversing text and display thing in the LCD, but I don't quite understand this request. You can enable or disable reversing display in your camera's option setups. And since the ONLY time that's even used is when you are using it to compose a self-shot, usually from so far away from the camera that you can't even read the text let alone see the itty-icon info ... what's the point? Do you need to read it while you are taking a photograph of your eye? :-) If that's the only time, then ... I'd tell GrAnd to not waste his time on this. Keoeeit 02:09, 20 June 2007 (UTC)


 * Not exactly what I was asking. I was not referring to the CHDK OSD in zebra mode but to the parameters and info the camera normally displays such as WB, ISO, flash mode, focus points, aperture, shutter speed, picture count... you get the point. When zebra mode is enabled it causes the camera display (as opposed to OSD in your usage) to disappear whenever over/under exposed areas are indicated. It would be nice if this could coexist with what's already there. About the mirrored display, the image is reversed when the screen is flipped out and to the front to show a mirror image and make self-shooting easier.  The camera info (same as I was referring to before) is not mirrored.  However the entire CHDK OSD is mirrored (not just the battery icon).  It just happens that for me the most convenient location for the battery icon is on the lower right corner just above the pictures remaining counter. When the screen is flipped the icon appears on top of the information shown in the left side.  Self-shooting can also be made at arm's length too... and a reversed histogram is confusing.

recording movie in WS mode, possible ? using script
Just a thought, is it possible to record movie in wide-screen mode?. I guess its just add black bars on top and bottom, and could be possible using script.

Any thoughts ?


 * Neat idea! My first thought was, "Nah, I don't think this would be possible. That's a firmware issue." Then I started to think ... the video recording gets its signal off of the EVF/LCD display data! The same thing that GrAnd is tweaking for all the OSD elements displayed. So? ... Maybe this would be possible? Then I started thinking all kinds of effects might be applied to the video feed if this is true. Otherwise, best bet is to use any post-processing editor to crop and convert your images to other video ratios. I use Virtual Dub (amazing freeware from VirtualDub.org) for all my video editing needs. With all the dozens and dozens of plugins that users have written for it, you can make a video do darn near anything. Not all of the plugins are at the main site, you have to google to find them, hundreds of links show up. Keoeeit 16:47, 21 June 2007 (UTC)
 * Nope. The EVF/LCD display gets the data from sensor. Video recording also works with senser data directly. So, any changes on the screen have no effect in video data. --GrAnd 16:56, 21 June 2007 (UTC)

Yeah, i know virtual-dub past 5yrs, hv been using it for dvd-xvid conversion! with GK. fisrt i thought of same to post process it in VD, but my corping may screw up the image, means i may cut of somebodies head, if i hd the black bars right on LCD while recoding, then i could frame it so i dont cut somebodies head :)


 * Just record using the new graphic overlay feature, you can put white lines that show you where the black bar will be and you can just shoot with that in mind. Or even black bars I guess. They will not show up in the recording but will provide an aide to you when shooting. HighInBC 13:41, 25 June 2007 (UTC)

Has anyone Googled for CHDK lately? Wow!
I was curious to see if there were any other sites online posting scripts, so I input chdk scripts canon into Google to see what would show up. Word sure has spread far and wide. Some interesting comments out there, lots of people hoping that Canon would make things like scripting as a basic feature in all their advanced cameras, or to at least keep their firmware open to 3rd-party add-ons like CHDK, with documentation freely available to developers. (I sure hope some Canon rep passes on the Tele-Macro bug that I found to their firmware authors. Whatever lens element that script-bug is moving turns their 12x zoom into a phenomenal new macro lens! Far surpassing anything that Canon has done with that optics design. I just want to be able to implement it safely!) Keoeeit 16:46, 21 June 2007 (UTC)

640 x 480 at 60 fps?
I have the Canon S3 IS. I was wondering if it would be possible to extend the movie/video mode to include a 640 x 480 60 frame per second option?

Thanks!

Longer voicecomment?
I have Canon A710IS. Would it be possible to make longer than 60 seconds voicecomment? Or movie without any picture, just voice? Just to use it like taperecorder.

Variable Speed Zoom
As I mentioned in the previous post, I have the Canon S3 IS. I was wondering if it would be possible to extend the zoom feature from two speeds (fast and slow) to include more increments? For example, Super Slow, Slow, Medium, and Fast.

Thanks Again!

Translation
Hi! I've translated english.lng to Polish. Where can I send the language file? --Gophi 15:27, 23 June 2007 (UTC)
 * Polish version already exists in this wiki. If you have a modification (e.g., new lines was added by new CHDK build), just edit the current one. --GrAnd 18:27, 23 June 2007 (UTC)

Hi, I'd like to konw if this Wikia is alredy translated to spanish. Or if is any other site offering some info in spanish. I tried googling, but i couldnt find any. If it is not alredy done I could do it. Maybe to french or italian if i have the time. Just let me know if u interested: diegho_at_argentina_com The problem would be the updates....this wiki way is a bit difficult to follow..

After dark frame subtract
Hello and thank you a lot for all your work and efforts with CHDK. I'm a happy user of CHDK. I'm currently using the latest version (test1-pre12 #129) on my Canon Powershot A710 IS. Yesterday I tried some long-exposure evening/night shots, ranging from 1 sec up to 15 sec in manual mode. CHDK was correctly loaded and "after dark frame subtract" was enabled. Other enabled features in the RAW menu where: "save RAW" (of course), "only first RAW in series", and "RAW file in dir with JPEG". I got no E16 error on my camera. After uploading the shots in my PC and converting the .CRW files to .DNG with "DNG for Powershot 1.1.4", I used Raw Therapee 2.1.1 to "develop" the .DNG files. The results were quite noisy (bright white/red pixels scattered over all the pictures) just as if there had been no dark frame subtraction at all. On the contrary, the corresponding JPG pictures had no such bright pixels. It seems that dark frame subtraction worked for the JPG files but not for the RAW files. Could you please fix this? Thank you in advance. Regards, Enrico - Italy.


 * I am also curious as to how dark frames work with this add-on. HighInBC 12:55, 23 June 2007 (UTC)

Support for DIGIC III
Is anybody out there working on DIII support for CHDK? With DIII getting more and more popular, why not?

The new "Grids" feature is GREAT!! But ...
Thanks so much for that grids option. And even better that anyone can design any composition aids they want!

But ... I think it needs ONE final touch ... a shortcut button to toggle the grid on and off. Since half-press + left, up, and right are already used. How about half-press down? :-) (I'd add something to the usage page about how to write your own, but I'm not too sure how the elps (ellipse?) works. We might need a separate grids tutorial page, like the nice one Harvester made for fonts. With some samples and images.) Keoeeit 15:28, 23 June 2007 (UTC)
 * The shortcut half-press + down is already used by original firmware on A-series (MFLock).
 * 'elps' is ellipse, right. x0, y0 - center; rx, ry - two radiuses (See Ellipse; a&b on the picture). If rx equals ry, it will be a circle. --GrAnd 18:19, 23 June 2007 (UTC)


 * Thanks for the clarification. I started a page already for Grids, hoping someone can write a nice tutorial for it. As for a shortcut, how about ... Each press of one of the other shortcut buttons could cycle through some options? Like Half-Press + Right = OSD + Grid Off. Press again, OSD On, Grid Off. Press again, OSD Off, Grid On. Press again, OSD On, Grid On. Would something like that work? But that could get really annoying I guess if you just wanted to quickly turn the grid on or off. Hmmm.... Or is thare another button that's still free somewhere between A & S series? Then too, now that I made my own grid in milder line-colors (the golden3.grd one), I might just leave it on all the time, so toggling a grid on and off might not be that important. Thanks again for adding such an amazing feature! It'll be neat to see what other grids people come up with. Keoeeit 19:05, 23 June 2007 (UTC)

File Number Set/Reset
Somehow my file numbering got reset back to zero (or rolled around back to zero) I'd like to be able to set the number manually back to a number that I can define. Really, after reviewing the situation, I bet it wrapped? Is there anyway to alter the counter to support more than 9999...say 5, 6, 7 digits (Canon 610)? Or perhaps change the prefix (like you can with RAW)? --76.210.119.60 02:36, 25 June 2007 (UTC)


 * The easiest way to reset your file-numbering to any number that you want is to put an image back into the most recently used image folder (i.e. /DCIM/112CANON/IMG_XXXX.JPG) and changing the file-name number to the last number used. The XXXX should be the last number you want to start it to count from. The camera will detect this file and starting incrementing up from this last-used number. This works on most any digital camera, even my very first 1600x1200 Fuji that I own. Just be sure you have your file-numbering set to "Continuous" and not "Auto Reset" so it will pick up where the last one left off instead of creating a new folder and starting at IMG_0000.JPG again. I use this method if I ever have to do a full-reset or forget to change something and the numbering gets screwed up. I don't think there's much that can be done about allowing the file-number to be higher than the 9999 limit built into the firmware. I just keep track of how many 10,000 photos I've taken by my backups. Though I can see how the high-speed burst mode of these cameras is going to make my numbers roll-over more often than in the past. :-) Keoeeit 18:50, 27 June 2007 (UTC)


 * Prior to my current Canon A610 I had a Kodak Easyshare camera that used a numbering scheme that didn't roll over completely. It started at 100_0001.JPG and when it rolled over after 9999 it continued with 101_0001.JPG so you never had two pictures having the same number.  Could something like that be worked out?

Auto-Cancel Review Wait Period on Zoom
One of the only annoyances remaining (thanks to the efforts of this group) in my Canon610 is when "Review" mode is on. It prevents the user from preparing/zooming for the next shot until the review wait period is over. That would be great to adhere to the review wait period, but if the user begins to zoom, simply cancel out of the period. --76.210.119.60 02:36, 25 June 2007 (UTC)


 * You can disable the review, and keep the shutter release button pressed as long as you want to review, or pres 'Set' to lock the review. It works very good. PTT

Support for smaller Powershots?
I have a SD550 and SD630. Any chance these may be supported in the future? They are all DIGIC II based.

Thanks!

Fonts Display Tweak?
When making some of the grid masks for cropping areas, I wanted to make a universal cropping mask by defining the areas with different colored lines instead of grayed-out borders. For example: blue lines would be for 5:3.5 ratio, green lines for 16:9 ratio, etc. One grid file that could define all possible crop ratios. Then I wanted to create an itty-bitty label by each one so I could remind myself what each color stood for. A small "16:9" in the same color as, and displayed near, one of those particular pair of lines. I thought about using the @line commands to draw each character, but .... tedious to say the least, and moving a small snippet of text to a better location could take even more tedious coordinate editing. Would it be possible to have a font display option in the grid commands? With a user selectable size? I know that that "MS Reference" font that I've been using for my text-reader can be displayed in very very small sizes and still be legible. I'm just not sure something like this would be worth if for all the programming you might have to do. In lieu of that I suppose I could write an accompanying script that would just print what each color means, that could be run to remind myself before use. A clunky work-around but also do-able.

Also, would it be possible to have colored fonts in the script print "text here" command? Something perhaps along the lines of how mIRC does it for IRC? A simple CTRL-KEY code for various colors? That could save on lots of script space. Maybe ones for bold or reverse too? It would be nice to have important instructions or values highlighted for quicker recognition of them.

These aren't really important. And as for fonts in the Grids, they could be drawn with the line commands if I really need them, I just thought they'd be nice little touches to some already amazing programming. Keoeeit 19:11, 27 June 2007 (UTC)

Some stupid ideas
- What about a in-camera raw development? First shoot raw, at the end of the day convert to JPEG (or other compressed format) with optional parameters.

- What about MJPEG to DIVX/XVID/H.264 conversion? It probably won't be possible to do this in real-time, but would be useful to reduce memory card usage at the end of the day (e.g. long trip with no laptop).

- Is there any information how the DIGIC-II is organized. Are there co-processors (e.g. DSP for JPEG-Compression)? What is the performance of the ARM-Core? I guess if most of the computational intensive work is done by coprocessors, the implementation of computational intensive tasks that i have suggested will be either very complicated or very ineffective. Btw. were is the firmware dumper code? I can't find it anymore. -- Insane 16:51, 29 June 2007 (UTC)

okay...all this looks good but is there going to be a port for the S80??

Port for S80?
Great little camera but needs RAW...what chance???

Save all pictures as raw in stitch assist mode
Hello,

I think that even if the option "Only first RAW in series" is set, it has to be ignored when composing a panorama with the "stitch assist" mode. I suppose it cannot be difficult to implement, because we can know the selected mode in the dial, am I wrong?

What do you think?

[update] though I have not had the time to set up the compiling environment, I think that something like

m = mode_get; if(m&MODE_SHOOTING_MASK)!=MODE_STITCH){   // got here second time in a row. Skip second RAW saving.    if (conf.raw_save_first_only && state_shooting_progress == SHOOTING_PROGRESS_PROCESSING) {        return 0;    }    }

added add the beginin of raw_savefile in raw.c might do the trick.

Light Meter
Hi, I'm a large format photographer, (and a computer scientist, and sick C programmer). Anyways, since I'm an intern, I'm po'. I also wanted a p&s camera because I was sick of haulin' my d70 around. So here's what I am doing. I am going to mod the software so it can be an advanced light meter. This is practical, right? I mean we already have access to the histogram.

I mean I'd rather pay ~220 for a camera that has camera capabilities than 400 for a spot meter. I got an A710 IS by the way. Hope it's good.

Has this been done already, is there any work being done on it. Would anybody else be interested in this work?

Thanks, Mike

What about adding 12.5, 25 or 50 fps video modes for the european folks?
Currently all nearly digital still cameras only provide 15, 30 (and/or) 60fps video modes.

This isn't compatible to any video standard at all. (NTSC is 59.94 fps and PAL is 50fps).

(At least it is more compatible to NTSC than to PAL)

A conversion of these videos to PAL will result in a great drop in motion quality (jerkyness)

Would it be possible to add 12.5, 25 and 50 fps modes to the CHDK?

This also could reduce processing time within the DIGIC-II while filming...

ZOOM POSITION WITH LENS CONVERTER
display the zoom value when using a converter (tele or wide). multiply the value by the converter factor (0.5, 0.8, 1.5, 2, 3, etc)

Canon HV20 firmware hack
Is there also a firmware hack for the Canon HV20 camcorder? We need manual controls for iris and shutter. Also if the image could be flipped & mirrored would be fine to use with depth of field adapters.

S80 Raw Plea
Is there anyone working on RAW for the S80? It was a significant improvement over the S70, has an excellent 28mm lens (rare these days), is pocketable, and in my opinion has the best 1/1.8" Canon sensor before Canon went too far in down-sizing pixels. It still used Digic II.  I can't think of a better candidate for RAW in terms of pocketable IQ.

Even without the other wonderful features of CHDK, the addition of RAW alone could turn this camera into perhaps the best and most flexible pocketable IQ available. I own and enjoy the G7 and A640 with CHDK, but Canon went one step too far in pixel density with these cameras, and they lack true WA.

MANY THANKS !!

Draw zebra with Color Swap feature
When using the zebra in record mode it lags behind quit a bit, it would be great to use a direct function such as the color swap function for it. There are property cases for the colors and tolerances, I don't know wether the MyColors Property Case enables it directly if you set it to Color Swap. PTT 01:07, 9 July 2007 (UTC)

A710IS : Add a focus step (or two or three) between 5ft and infinity?
The A710IS' focus, at the most distant end, jumps from 5 feet to infinity.

The camera can't focus sharply enough on anything in between to take advantage of the quality of RAW files. Even with JPEG files of any reasonable quality, the blurring that results from misfocus in this range is evident from a casual glance at the pictures, even at low enlargement.

Is it possible to add another focus step between 5 feet and infinity, in CHDK? More than one added step would be preferable. If it can't be done in CHDK, then Canon should revise the firmware for the camera.

R. Clark Seattle, WA

- Yes, every possible focus step is available (addressable) via CHDK. Read the usage docs for the "set_focus" command. ~Russ

- After some further use, I think it's better for the moment to to stop using manual focus, because even though that prevents the focus from shifting around somewhat from shot to shot, the tiny low res LCD display and the coarse built-in focus steps make it much less usable than a typical SLR with split image focusing.

A new manual focus function with continuously variable focusing and a much magnified whole-screen focusing image would help considerably. Using the whole screen for precise manual focusing would be an improvement, even though it would take a button push to toggle between the focusing screen and seeing the entire image. The present method of magnifying a small center square by about 2x is very much less effective than that would be. I don't know what the optimum magnification would be, but ideally that would be user settable.

S3 IS settings tip:  toggle on ISO button
When we were given the wonderful option to choose which button to use to toggle  mode on and off I chose the [FLASH] button. Just out of habit because I was using that so much in the beginning to enter and exit  mode safely with earlier builds of CHDK.

Today I was testing out some of the new features that were recently added and ran across that Misc Stuff > ALT Mode Button option again and .... it dawned on me ... how many freakin' times do I accidentally press that ISO button and accidentally change the ISO? Then I have to press it 7 MORE TIMES to put it back like I hat it! GRRRRR!!! Well, with the ALT mode enter/exit feature where you have to hold down your chosen button slightly longer to use its original purpose ...

Putting ALT toggle on the ISO button solves, what I found to be, a REALLY annoying problem on my S3. Now if I accidentally hit the ISO button it only enters and exits  mode. If I really want to change the ISO then I hold it down a bit longer. What a relief! :-)


 * Accidentally changing ISO sucks, you think you have this wonderful picture and it is all noise when you get it home. HighInBC 12:27, 10 July 2007 (UTC)


 * Ooops, there's one huge drawback. On the S3 IS the camera has a built-in shortcut using half-press + ISO button to engage AE-Lock. This allows you to alter the automatic exposure setting by toggling through equivalent shutter-speeds and f/stops (with left/right buttons) so the exposure remains the same but for various needs. (DOF changes, or motion blur priorities, etc.) When the  toggle is set to the ISO button this no longer works. Even if you hold in the ISO button longer to bypass the  toggle. Ah well. :-( I wonder if there's a way for CHDK to remedy this? Where the  toggle would become disabled during a half-shutter press? I guess its not a big issue, but now I've had to remap my  toggle to another button yet again (using "timer" for now to see if that is free and clear of other crossed conflicts).

The clock display
The S3is supports a 'World' time as well as the 'Home time'. Each of these can in turn be set to 'summer' (daylight saving) or 'winter' time. These time values get written to the EXIF metafile for each image.

Unfortunately CHDK's clock isn't aware of this feature and always displays the 'winter' Home time regardless of the settings.

CKDK's clock would be more useful for those of us who travel frequently if it could be forced somehow to display the same time value that the camera uses.

Thanks

Adding a related problem.

When shooting in RAW using an S3 IS, the CRW file and the corresponding JPG file got different file creation times. The JPG is created using daylight saving time (currently active in this time zone), whilst the CRW is created using the standard time.

Thanks ~Cactus

Switching of Display while executing script
hi! it would be cool if there was a way to completely switch of the display of the Canon IS3 while executing a script (for example intervalometer..) for saving battery power not just the external display, but the one inside the camera also (when you look trough the seeker).

This ability is already present as an option. Read the docs for the "click" command: CHDK uBasic tutorial Your script will execute a line containing the instruction click "display" by simulating a keypress on that button.

Bear in mind that the DISPLAY button cycles through various states (vs just toggling on/off). Before starting your script, you will need to assure that the next click (a single click of the Display button) will have the desired result. Also, at the tail-end of your script, you may want to include command lines (2 additional clicks?) to return the display to the "state" in effect when the script started. ~Russ

Automatic Subject-Size Scale?
Okay, here's one that I wish a camera had, and it's quite possible to do on any digital camera, BUT ... I doubt it can be done with CHDK. What a boon to the macro-photography world it would be if it could though.

Often, very often, when taking macro-photos of insects, plants, wild-flowers, small reptiles, etc. it is almost a necessity to know their size (sometimes to within a millimeter) for later identification purposes. Sometimes their size will even be the ONLY determining factor of which of two look-alike species they might be. (I ran into this once with some small beetles, luckily I was able to photograph them again with a ruler to find out they were the extremely rare "compact" size ones. The common ones being 9-11mm, the rare ones being 6-7mm.) I always carry some disposable rules in inches and centimeters in my camera bag. IF I remember I'll put one in the FOV in one of the shots so that I can document the subject's size. Or if I forget to bring a rule along I'll throw down a coin, bic-lighter, some paper currency, anything that I can photograph along with the subject that has a known size so I can later measure the subject from the known item for reference. This of course all depends on the subject staying still long enough to accomplish this. Guess how many times the subject is never still enough? And guess how many times I forget to include some size reference? A LOT!

How wonderful it would be if I could just toggle on a button to automatically insert a small scale in the corner of the image, determined by the lens' focal-length, zoom-factor, and in-focus distance of the subject.

If you could make something like that? You'd be forever in the debt of every macro-photographer and research scientist on the planet!

Sayyyyy...... I just thought of something ... maybe this is already possible with CHDK as is? Is it possible to write a script where when a photo is taken, a text file is written with the corresponding image-file number, and in that text file the focus distance, zoom-factor, etc. could be recorded, or even have the size scale all figured out for you? The text file could simply be something like "img_0065.txt" with a line of 200 pixels = 12.3mm, or whatever would be a good equivalent for that subject. Is this possible???

Shutter speed and EV meter
First of all I would like to say that CHDK is great! I use it only my A640 :)

Is it possible to increase the shutter speed above 1250 with F2.8 ? This would allow for fast action shots with a reasonably high amount of light. There is not much use for a 1/2500 shutter speed if all of your pictures come out dark due to little light :)

Is it possible to get Av mode to take pictures longer than 1 second? Often I want to take pictures in the dark, and would like to have this done automatically instead of playing with the shutter speed all the time.

Is it possible to change the EV meter to show values higher/lower than +2/-2 ? Sometimes for exposure bracketing, I would like to manually select an EV of +3/-3 for example.

That's it for now :)

Intervalometer extensions + indicated light
It would be great if there is an indicated light for each shot.

Auto shooting / Motion-Detection
I mean a camera can take pictures by itself when object is in focus range (like some DSLR) or when degree of light change (like people walk through the frame, someone turn on the light, or lightning?) Can we get some retrieve information from histogram?


 * Motion-detection might be beyond the scope of what CHDK can be made to do. (Or is it?? If not, this would be a fantastic addition!) In the meantime, check out this section of the FAQ. The program Cam4You Remote has motion-detection built-in. But it requires that your camera is hooked up to a computer to run it.
 * If CHDK can be made to do motion-detection, I would LOVE to see this! If it can detect over and under-exposure areas with the Zebra feature, I wonder why it couldn't be made to detect changes in the scene too. I foresee a little script command like "wait_change x" where you set a level of change in the EVF, setting it's sensitivity with the variable x. Think of the remote-triggering possibilities with this too! You could shine a little light or something from the edge of the FOV to make it act like a cable release. All sorts of possibilities with something like this.


 * I tried making a motion-detection script using the available script commands. My try is on the scripts discussion page here. But it's not working. Perhaps if someone sees this and can offer their input it could be made to work? I can get it to auto-trip the shutter if I put the script on pause by exiting  mode, then switching to a mode on the mode dial where I manually change the Tv and Av values, then reenter  mode to resume the script. As soon as the script resumes it takes an image, just as it should when either Tv or Av changes values. It just won't do it on its own using the camera's automatic exposure settings.

Higher quality JPG processing
I have noticed that A710's firmware JPG images have more artifacts and lower quality than the same or smaller file size JPGs created with Photoshop or ImageMagick from RAW originals. There isn't much quality loss from RAW to JPG if a high enough quality is specified in ImageMagick. This is a very visible improvement compared to the in-camera generated JPGs.

It's undoubtedly because of the need for very fast saving of the JPG images. Could anyone estimate how many seconds a higher quality JPG processing routine would require when run on the Digic II?

Adding an option for very high quality JPGs, of near-RAW quality, in addition to the modest-quality native JPGs, often might be a worthwhile choice as an alternative to RAW files. This is especially true of taking pictures of events where post-processing time is very limited or almost unavailable before the pictures must be ready.

S3 IS: possible bug
I was just trying out some self portraits on my S3 IS and noticed that with CHDK enabled, the LCD just turns white when you flip it around. ie. when it's supposed to invert the screen, it doesn't and just shows a white screen. I turned of CHDK and everything worked again. Thanks


 * Like Bill Gates would say, "That's not a bug, that's a feature!" :-) Seriously, it is a feature of CHDK. Look in your MISC menu for "Flashlight" and turn that off. When it's enabled the LCD turns all white when flipped forward so you can better focus and compose your subject for macro shots in dim lights or light your way in the dark when you're being chased by bears. :-)


 * Sweet! That's really fun... the problem is, with the screen like that, there's no way to frame a picture, since the EVF is still turned off. Also, when taking a picture with the screen flipped, the screen goes black during the exposure anyway, so there isn't actually any extra lighting for the picture. Maybe some things to consider for the next version :)


 * Yes, I failed to mention this little catch-22. :) The original idea was nice though. I still think it's a fun little novelty. If you ever want a flashlight in colors (say, red to preserve night-vision when looking at your star-charts), just use the color palette browser in CHDK. In any case, it still might save you from being eaten by a bear!

Using the S3 IS sound-recorder
How about making use of the S3 IS brilliant audio recorder fx. record audio when a shot is fired, or even better: record sound when first shot is fired, and continue until termination of the script.


 * For some reason I don't think they can enable the sound-record feature, it's been asked in the past. But what you can do is write a small script to take your shot then to enable video-recording at the lowest possible resolution. Yes, it'll take up extra space, with the video stream, but not as much as you'd think compared to audio-only at its highest sampling rate. And with SD cards being so cheap there's lots of room to play with. Record the sound that way and strip it out of the low resolution video later with all manner of video-editing programs. Some are even written just to rip sound-tracks out of videos. It still records 44kHz sampled sound (if you have it set to that) even at 320x240 and 15 fps. ... Doesn't it? I think it does. I'm almost sure it does. I was planning to use this method when and if I need to enable sound recording by CHDK script. Test it and let us know how it works. :-) (Then share the script!) If you put your lens-cap back on while the video is recording every frame will be solid black. This will cause an extremely high compression ratio, greatly lowering the already small 320x240x15fps video file-size.

Shooting Mode Dial
Idea about using SHOOTING MODE DIAL ( C, M Av, Tv, P ... modes) : Add the possibility of choosing the position of the dial to enable or disable RAW. By example : enable RAW with C mode and enable with others, or disable RAW with C mode and enable with others...

Please please please disable the AF-lock beep!
Most all of the Powershot cameras allow you to adjust the volume of all sounds or turn them off, EXCEPT that damned annoying, distracting, photographer-in-the-room-alert, auto-focus-lock beep! I would love to turn that off and still be able to hear audio from movies and sound recordings in playback or hear my other chosen sound events at the volume I set them at. Please, please, please, please, please, please, please, please, please, please, please, please, please, find a way to make that a CHDK option "Mute AF Beep" [ ]. Thanks!

RAW+JPEG
Don't know if it's possible, but I would find this very useful. I'd be able to do a very quick run through the JPEG files to sort out which ones would be worth post-processing from the RAW captures. Maybe make it an option when RAW is selected. As a note, if this is possible, I would suggest making sure the RAW and JPEG file name numbers matched.

Duh, I should have tried it first. Does it already! Sorry about that.

Live histogram showing all the time
I would love to have live histogram showing all the time as in Owen Marshall's version and maybe also the more compact DoF display.

The patch no longer applies to the SVN head so it will require some effort to forward port it. The problem with Owen Marshall's version is that for longer exposures, it doesn't subtract black image from the RAW file, thus exposing all the hot pixels.

Boot-up delay
Is there a way to reduce the delay when booting up with CHDK? If I modify the source code to remove the things that I don't use, would that help? Thanks.

I was just thinking that I don't need the games, calendar, histogram, or zebra options. Would they really have much effect on the boot up time?


 * Nope. All these things does not affect boot time.
 * There is one line of code in core/main.c which is "responsible" for boot-up delay: msleep(2000); // sleep 2 sec --GrAnd 20:07, 30 July 2007 (UTC)


 * Is there any reason that line is there, and would it be harmful if I remove it? Thanks!

Possible feature for A710is
Currently, the A710is (not sure about other models) connect via USB with WinXP as a "camera". I wonder if it is possible (with the help of CHDK running) to connect via USB to WinXP as a USB mass storage device (if not limited by the H/W or the real firmware). This would make it possible to update / copy content on the SD card without taking it out from the DC.

Thanks.

wklo

ISO reading in the EXIF field
My canon camera, the a710, dosen't write the used ISO value for the image in its EXIF field.I think its true for other model's too, as I've been reading on the internet. To view it, you have to use Canon's own Zoom Browser software, which I don't like. Also if AUTO ISO was used, then it just shows AUTO instead of the actual ISO used by the camera for the image.

It would be wonderful if CHDK can be made to write the used ISO value for the image, in its EXIF field, so any normal EXIF viewer can be used and also if it can show what ISO was being used by camera when AUTO ISO was used.

- I need this too. Now I use program ExifAuto from http://home.wi.rr.com/dick/ExifAuto.htm to read and write ISO (even if I use AutoIso) to Exif my photos.

a shortcut for switching on/off raw saving would be very good
The switching between raw/ non raw mode takes too long for me, especially when I'm travelling. So my idea was a shortcut to toggle between.


 * See this.
 * In my Canon 710Is I can turn on Raw press PRINT button (you see on screen "Default script"  ) and then press EXPOSURE CONTROL button +/- and press PRINT button again ("Default script" <ALT> dissapere). If you want turn off Raw mode press buttons again. (PRINT-EXPOSURE-PRINT).

File manipulation in uBasic
I would like to program a script file for infinit time video recordings. Therefor I need to realize a video ring buffer and to delete older recordings from inside a script. Guess two files recorded, delete the older one to preserve sufficient free space on the SDCard. This appers not to be possible since:

1. file deletion with click erase does not work for videos

2. there is no click button command to simulate a switch from recording to playback mode where file deletion would be possible

3. no access is given to the alt mode file browsers delete funtion, since alt mode functions are not accessible by click print

My proposed workaround: Add a simple file handling extension to ubasic.c with intelligent file handling functions fdel(n) where 0 = actual file -1 = previous image ...  or add ubasic commands to simply access the file browser

Optionally add fread(n) to read (raw) files into a buffer (if mem is available) and some builtin commands to add, weight, manipulate and save manipulated raw images.

Best regards ms

Choice of deleting RAW / JPG / RAW+JPG
Currently, when shooting with RAW on, only the JPG get removed if the shot photo is deleted in the [PLAY] mode using the [DELETE] button.

It would be nice to have addition choice in the config menu to choose among 3 options for deletion

1) both RAW + JPG; [for bad shot and want to take it all again]

2) RAW only; [when a better shot is got later and want to save some space]

3) JPG only; [have not got a good reason for this yet, :) ]

Thanks

wklo

Auto-Exposure Bracketing (AEB)
Is it possible to have AEB? This would be really useful for HDR photography. I.e. instead of having to change the exposure control manually between shots the camera could be primed to take three continuos shots with an exposure increment of +/-2. This would enable HDR imagery containing clouds (whose slow movement still is too quick for manual exposure change). The benefit of this system is the camera could be primed on a tripod and pictures taken as quickly as possible to each other without having to touch the camera again (which can also cause slight movements to the frame making HDR more difficult).

Thanks very much for you great work so far!

Nick

--76.210.116.226 01:46, 6 August 2007 (UTC) This can be done using uBASIC scripts.

Binning mode for dynamic enhancement
It is well known, that smaller sensors come along with higher noise and lower optical dynamic. Adding a software BINNING option to the raw mode option will reduce the resolution but increase the effictive pixel area by a factor 4 which reduces at least photon noise by the factor 2 and finally increases the dynamic also by a factor 2. Even ISO speed dependent amplification of kTC noise can be reduced when choosing lower ISO speed also possible because of the larger effective pixel size.

Binning should be very easy to implement from the raw image and needs almost no memory for the code. The stored binned raw image have higer dynamic and need 1/4 of memory. If it is possible to use the cameras build in jpeg compression, images should be optionally stored as jpeg o n l y, so no further external processing is required and no additional memory is consumed.

Please add your comments. Best regard ms

Lots of suggestions for both Professionals and Casual users! :)
My favorite thing about my S2IS is that it can be used by (semi) professionals and people that just want to have fun with it. I love how CHDK can add features for both types of users. Here are some suggestions for both:

Professionals:
 * Either change the colors of the focusing box, or make it a pixel wider. I’m slightly color blind, and if it’s really bright I have trouble telling the difference between the green (focused) and the orange (not focused). If you could implement something similar to the Grid feature that would change it to green and red (or green and flashing red!), that would be awesome.
 * As said above, deleting RAWs with their JPEGs would be very cool!
 * A meter for how much space is used/left on the memory card.
 * AM/PM, ft/meters, MB/Mb choices would be very useful for some.
 * Would 100% uncompressed JPEGs be possible?
 * The ability to delete unrecognized files via the File Browser.
 * Customizing Half-Shoot+Up/Down/Left/Right shortcuts (and the addition of toggling RAW mode would be much appreciated!)
 * For those who like to do before/after shots (like with filters) but don’t have a tripod with them, it’s hard to get them to match up perfectly. If you could add the ability to bring up a picture (either directly from Review Mode or using the built-in File Browser) and display an overlay of a previously taken picture (let’s say) at 30%, that would greatly help reframing pictures. -- that would be great indeed -Dennis G.
 * The only thing that I’m annoyed with my S2 over my S1 is that the focus isn’t locked after you take a picture and review it. What I mean is, if I zoom in all the way, focus, and take a picture, then immediately press SET to have the ability to zoom in on it and such, when I half-press the shutter again, the camera automatically goes back into a default (and 99% of the time, wrong) focusing distance, which forces you to refocus. The only way to avoid this is to not do a quick-review or use Manual Focus before the shot, but I don’t do this for many of my shots, so forcing the focus to lock during/after the quick-review (via hitting SET) would be great!

Casual/Just-for-fun Users:
 * If you could make an Applications folder, that could open up thousands of possibilities. I’m currently addicted to Sokoban and Reversi, and if you could put them up as files to put in and Applications folder, people who don’t want to waste memory card space with them won’t have to, and those who love to play games will have the opportunity. If you could set up a download page for user-contributed applications, that would be awesome. People could make things like calculators, notepads, and games (Pong and Tetris, anyone?), making the 320x240 screen that we always have with us fun and useful (and we can laugh at the people who don’t have Canon cameras and don’t have games on their cameras!). Note: this Applications folder would be different than the Scripts folder because the Scritps folder is just for shooting-specific enhancements that the Applications folder would be for program/fun/tool based applications.
 * I’m guessing this is impossible, but a media player would make DIGIC II cameras truly the best. The ability to see any JPEG, play MP3s (it can already play WAVEs converted from MP3s, but they’re HUGE files), and video clips that aren’t rendered with the M-JPEG codec would be sweet, especially if the camera was hooked up to a TV.
 * The ability to have slideshows with fades between images (I know this is already available for the S3, but not some others) and WAVEs playing in the background (this would be a great feature for the applications folder!).

-- these would be all great, making the Camera a Multimedia Device :-) -Dennis G.

in-camera correction and Panoramic purposes...
I use the A620 in shooting panoramas with a nikon FC-E8 adapted fisheye and a long pole. GREAT to have a good intervalometer... Would be possible to script intervallometer + an enhanced bracketing? something capable of 3shots+1 (-1.3/0/+1.3/+3) this would allow an HDR+ the 4steps method to completely eliminate noise in dark areas... THANX!!!

Than, would be wonderful to implement a self CA correction and a geometric aberration correction see panotools wiki for details

It would be also a TREMENDOUS thing if we could use the analogic video output to fully remote a serrvocontrolled panoramic head!!!!
 * -PPPPPPPP

Porting it on DSLR
To add scriptability at least!!! Just as in the "scripta" OS Kodak and Minolta built around their cameras...

printing the date time on the image in JPEG
in S3IS i am not able to identify when the photo is taken. can we have a script which will do the same on all images taken.

Zebra always on
It'd be nice to have this on-screen aid always visible so you can adjust exposure compensation without having to do the half shutter press and then back again (same goes for the histogram already mentioned). For that matter, hiding the standard OSD (not CHDK displays) when Zebra is activated is also frustrating since I can't see my camera settings (I know I can flash the Zebra overlay but that's distracting for me).

More precise info when Over or Under exposure is detected
More precise info when Over or Under exposure is detected - not only EXP but also which channels are clipped, are they over/under exposed. Something like: R-Over, G-Over&Under, B-ok ;) etc.

Video compression options
Since now we have the high compression option in movies, I am curious if it's tweakable: is it possible to choose how much to compress the video?


 * Grand said, it's not possible, because:


 * "Regarding customizing the compression level...


 * Right now it is impossible. As have been discovered, Canon's firmware have two : compression modes: Normal(0) and Hi(1). There is no variable, like : bitrate, to set. Only 0 or 1.

GPS Location Tagging
Edit Exif data of image in camera. Specially to add GPS location to image data or series of pictures. Set up data once and apply to picture as you take them.


 * This sounds really interesting, it could be done saving text files in a folder named locations
 * the GPS coordinates, it would be also nice to implement some input method so that the name
 * of the place and the coordinates could be modified directly from the cam. --Gabriele


 * It's not an in-camera real-time solution, but you might like this little bit of freeware http://geotag.sourceforge.net It also allows you to use Google Earth to plot your photo taking positions.

Auto power down on S3
Hi, and thanks for your masterwork on CHDK.

Would it be possible to change the delay of the "auto power down" feature of my S3. Currently, it is 3 minutes or nothing. I find this very annoying and do not use this feature on my camera. I would prefer a delay of 3 to 60 minutes. It would be useful if I forgot to turn off my S3.

Thanks again!

setting focus (& shooting a dark frame)
set_focus_rel could be useful for DOF stacking scripts. The command would move focus a step (or n) to the next(/prev) valid focus. Not every focus value is valid. For instance set_focus 2000 sets focus to 21-hundred-something. Or less or more. Now, to get acceptable speed in changing focus at higher focus values fast & accurate enough, click "left"/"right" (Axx0) while in MF has to be used at least to some extent. I guess. See my yet another DOF stacker -script. So something essentially similar to clicking left/right while in MF.

Also: could shooting just a dark frame be possible? :) (As wondered far above...)

--Jucifer

Problem using Libsans20b.rbf on my A630
If I have chosen Libsans20b.rbf as my font, when press ALT + SET the Scripts menu does not work properly... I need to open the battery door for recovering the control I apologize if this is not a suggestion...

Word wrap in the Text Reader
I'm hoping this would be an easy feature to add.
 * This feature was implemented long time ago. --GrAnd 11:25, 24 August 2007 (UTC)
 * Apologies GrAnd - I had overlooked the option. Found it now. Perhaps enable it by default?

Customizable shortcuts?
I would like half shoot+left for Grid on/off instead zebra mode. Perhaps customizable shortcuts for a future version...

Shoot RAW only?
Is there any way to turn off JPG entirely? If shooting RAW then JPG is a waste of space.


 * JPG a waste of space? Not really. RAW doesn't record any EXIF info. That is only recorded in the accompanying JPG file. And under unique lighting situations it's sometimes handy to have the original JPG to refer to to see what the camera used for color-balance. Using utilities it's possible to copy the EXIF data from the corresponding JPG file to the resulting image that you create from the RAW file. So, while having RAW-only might be useful for some reason I'm not sure you thought this through completely. If it's only to save SD card space you might want to get larger cards. They are really inexpensive these days.

Problem setting White balance our RAW Images
I think RAW is a great function for my A710 IS but I've always the same problem: White Balance. My Raw images have strange colors. Did anyone solve it?

Zoom position memory/lock
Hello, first off I must say that CHDK is wonderful, thank you so much for taking the time to develop it.

One small feature that I think would be nice is some sort of zoom position memory/lock. Here's my issue. I've got a Powershot S3 IS and when I have my lens hood attached as well as a filter, I get a bit of a vignetting effect in max wide angle.To work around this I just zoom the lens a tiny bit and it goes away. Well the problem is if I turn my camera off and then back on, sometimes I forget to rezoom and get the vignetting effect again.

It would be nice to have an option in CHDK to rezoom the lens to the last position on power on. Hopefully thats possible and apologies if that's already been suggested!

Mike


 * Check out the scripting features. You could write a little script like:

@title Zoom Pre-set set_zoom 10 end
 * Where the set_zoom value is whatever zoom-step you'd like to have it jump to (see the scripting tutorial on available zoom steps for your model of camera). Then all you'd have to do is run the script once after turning on your camera, or any time you need to return to that precise zoom value. A simple sequence of toggling on <ALT> mode, press the shutter button, exit <ALT> mode, to set the zoom position. If you have that script loaded as your default script that is. CHDK remembers what script you used last and will reload it when you turn the camera back on.

Insert and edit IPTC meta data in images
I currently thought how cool it would be to add IPTC meta data directly after the shot. Could work like this: - You have a txt-File with predefined keywords on your SD-Card - define standard keywords every pic gets (example: if you're in berlin for sightseeing every pic should have the keywords germany and berlin) - Take a picture - A dialog comes to the screen and you choose some more keywords that are specific for the picture - everything is stored in IPTC-Data of the JPG-file

Before thinking about use cases for other IPTC fields, the question is if it's possible to read/write/manipulate meta data (IPTC, EXIF, JPG-Comment) in general.

Raw function only?
My A640 camera seems to be slow/sluggish when the CHDK is running. I think that some of us are only interested in the RAW function. Do I understand correctly that RAW is simply disabled in these cameras? If so, is it possible to load/boot the CHDK, enable RAW and then exit? i.e could you terminate CHDK and leave RAW output enabled until the camera is turned off?

BTW, color on the RAW files is a little too warm on the A640. I assume somebody has already told David Coffin about this? Does the CHDK attempt to set the white balance or is it up to DCRAW to tweak? I noticed DCRAW says, ". . . Scaling with black 31, multipliers 1.838080 1.000000 1.556674 1.000000". Does the camera set these multipliers? Maximum resolution on the A640 is 3648 x 2736. Did anybody notice that RAW files are 3672 x 2760, that's an extra 153,792 pixels. :)

And lastly, what does CHDK do to "Make Card Bootable"?