Proper video with Zoom & Focus - Feature Requests - CHDK Forum
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Proper video with Zoom & Focus

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Offline mkmenuts

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Proper video with Zoom & Focus
« on: 16 / March / 2008, 09:49:28 »
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I know it is possible to use a script, and I have - It allows zooming and does the refocusing on cameras that don't have it built in (S2, S3, others?).

However, there are 3 nagging issues (for me):

1. Need to load the script.
2. No "autorepeat" (can't hold the zoom lever down for the zoom to go further).
3. Nasty noise in the recording.

I think a solution is possible in code to:

1. turn off sound recording before zooming.
2. Keep zooming in case zoom lever not released.
3. Focus after (and return sound recording)

Since the Digital zooming in video is not so hot, I guess we could simply do away with it, and have CHDK use real zooming while in video recording.

Comments?

mkmenuts
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Offline PhyrePhoX

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Re: Proper video with Zoom & Focus
« Reply #1 on: 16 / March / 2008, 10:03:03 »
good idea, i also thought that it would be better to allow zooming via code directly in chdk, not only via script.
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Offline ewavr

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Re: Proper video with Zoom & Focus
« Reply #2 on: 16 / March / 2008, 12:31:52 »
Quote from: PhyrePhoX on 16 / March / 2008, 10:03:03
it would be better to allow zooming via code directly in chdk, not only via script.

Coming soon, be patient  ;)
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Offline PS

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« Reply #3 on: 16 / March / 2008, 12:56:28 »
.
« Last Edit: 01 / February / 2009, 13:26:30 by PS »
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Offline PhyrePhoX

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Re: Proper video with Zoom & Focus
« Reply #4 on: 16 / March / 2008, 13:27:47 »
Quote from: ewavr on 16 / March / 2008, 12:31:52
Quote from: PhyrePhoX on 16 / March / 2008, 10:03:03
it would be better to allow zooming via code directly in chdk, not only via script.

Coming soon, be patient  ;)

i'm starting to get the feeling ewavrs' got an ace up his sleeves, in form of a major rewrite, that makes me kinda IMpatient :D
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Offline ewavr

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Re: Proper video with Zoom & Focus
« Reply #5 on: 16 / March / 2008, 19:26:22 »
Done - changeset #332 !
Without A650, A720, IXUS65(SD630) - because MovieRecord task redefinition absent.
Without IXUS700(SD500) - because corresponding function absent.
Without SxIS - because this function already present  :)
Tested only on A710.

Sorry, no pause or mute function on zooming not available (not found yet).
« Last Edit: 16 / March / 2008, 19:28:23 by ewavr »
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Offline mkmenuts

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Re: Proper video with Zoom & Focus
« Reply #6 on: 17 / March / 2008, 04:08:36 »
Wow! Talk about a fast response!

Can't wait for the next build - I hope it also includes my Custom AutoISO... It's a bummer to re-merge every time.

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Offline a710is

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Re: Proper video with Zoom & Focus
« Reply #7 on: 17 / March / 2008, 04:54:30 »
can't wait to test the new build.  :D
also btw maybe the ND filter will be reintroduced for the A710. ewavr you wrote that it's not present however the ND filter switch made a very obvious change on my cam. are you sure it doesn't work on your cam?
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Offline PhyrePhoX

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Re: Proper video with Zoom & Focus
« Reply #8 on: 17 / March / 2008, 05:43:51 »
Quote from: ewavr on 16 / March / 2008, 19:26:22
Done - changeset #332 !
Without A650, A720, IXUS65(SD630) - because MovieRecord task redefinition absent.
Without IXUS700(SD500) - because corresponding function absent.
Without SxIS - because this function already present  :)
Tested only on A710.

Sorry, no pause or mute function on zooming not available (not found yet).


tested it on a620 - sorry, didnt work. enabled it in video settings. tested a few times just to make sure, to no avail.
what exactly is the procedure one can do to test it thoroughly? enabling it in video menu should be sufficient, right? then record a video, it *should* use the zoom buttons to zoom in & out, no matter if you are in alt mode or not, script running or not. shouldnt it?
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Offline quietschi

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Re: Proper video with Zoom & Focus
« Reply #9 on: 17 / March / 2008, 06:01:15 »
Hi

Tested on my Ixus70. Zooming during video record works, no control over focus. Btw i found out that Subject Distance override don't work anymore. Camera hangs when setting any Subject Distance. Manual focus seems to work, but when pressing shutter half camera hangs. Any Idea?

cheers quietschi
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