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)

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.

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!

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)

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
with Canon S5 launched in a big way, it probably makes sense for someone to have the CHDK support for DIGIC III

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

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 changes 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)