S3IS: Add shortcut for EV adjustments (Allbest build) - General Discussion and Assistance - CHDK Forum

S3IS: Add shortcut for EV adjustments (Allbest build)

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S3IS: Add shortcut for EV adjustments (Allbest build)
« on: 12 / March / 2008, 06:14:03 »
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Hello,

oftentimes I don't agree how my camera measures when I look at the Y and the RGB histogram (I love these, many DSLRs don't have them ...).
But - either I shoot in Manual mode, having to adjust shutter and time all the time from the scratch, no Auto-ISO available ... or

I go to AV, set it to F/4,5 for sharpest images, and select +/- EV with up/down buttons.

What would it do better than today?
- I don't have to go into the Func menu
- I see the changes in the histogram at once (like in manual), which is great for metering correctly
- The Up / Down buttons don't have any function yet, so no problem I suppose

What does CHDK have to do?
- when in AV modus, if clicked "up", then set EV+1/3
- when in AV modus, if clicked "down", then set EV-1/3

--> I think this could add a lot of quality to the photos, look here: Expose Right

Can anyone put this into the next Allbest build please?

Thanks to everyone making CHDK possible!

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Offline wontolla

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Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #1 on: 12 / March / 2008, 07:37:28 »
Hi obitus.

Just one question. I never use EV so may be I'm not getting the idea.

Why don't you use Manual mode instead of AV?
That way you can set F4,5 and then play with the shutter speed so you can "expose to the right".

Either I'm misunderstanding or this is exactly what you want to do. You don't have to go into Func menu and you'll se the changes in the histogram.

Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #2 on: 12 / March / 2008, 07:47:47 »
Hello wontolla,

yes, it is perfectly possible in M mode, no doubt. This is what I do today.
But I find I am sometimes quite slow putting the right exposure when light changes.

My idea was to take the "suggestion" from the camera and work it from there. It is possible to use AV and then the EV +/- but maybe it would be a good thing to have it without having to go into the FUNC menu. That way you can see what's happening in the histogram "in live".

You see what I mean / anybody else can relate to this?

obitus

Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #3 on: 12 / March / 2008, 13:56:39 »
Deleted
« Last Edit: 22 / April / 2008, 14:05:05 by Barney Fife »
[acseven/admin commented out: please refrain from more direct offensive language to any user. FW complaints to me] I felt it imperative to withdraw my TOTAL participation. Nobody has my permission, nor the right, to reinstate MY posts. Make-do with my quoted text in others' replies only. Bye


Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #4 on: 13 / March / 2008, 09:04:13 »
Hello,

I am not really an expert on this, but I think it's "just" remapping a button-press to a function. If the EV+/- can be implemented upon the button-press is another question.

Do we have to adress or kindly ask someone if he/she can implement this?

obitus

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Offline jetzt

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Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #5 on: 13 / March / 2008, 09:48:56 »
So for the stupid windows user with the bad english:
What do you want to have changed? (hardcore screenshot of a710)

Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #6 on: 13 / March / 2008, 10:50:04 »
Deleted
« Last Edit: 22 / April / 2008, 14:05:25 by Barney Fife »
[acseven/admin commented out: please refrain from more direct offensive language to any user. FW complaints to me] I felt it imperative to withdraw my TOTAL participation. Nobody has my permission, nor the right, to reinstate MY posts. Make-do with my quoted text in others' replies only. Bye

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Offline jetzt

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  • [A710IS,(SD200)]
Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #7 on: 13 / March / 2008, 11:04:36 »
Quote
A "snap-shooter" I am not.

Me too.

Now I understand it, will try to implement that, as my sd200 port makes me silly1.
Edit: First Search for how zoom-key-mf is done failed.
Edit2: AH, that's done in platform/generic/kbd.c and core/kbd.c .

BTW. Is there a small screenshot function? I think that could be quite useful for testing.

1(already tried the astronaut-game: run with your head against a good wall until you can see stars)
« Last Edit: 13 / March / 2008, 11:46:18 by jetzt »


Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #8 on: 13 / March / 2008, 11:09:00 »
Deleted
« Last Edit: 22 / April / 2008, 14:05:45 by Barney Fife »
[acseven/admin commented out: please refrain from more direct offensive language to any user. FW complaints to me] I felt it imperative to withdraw my TOTAL participation. Nobody has my permission, nor the right, to reinstate MY posts. Make-do with my quoted text in others' replies only. Bye

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Offline jetzt

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  • [A710IS,(SD200)]
Re: S3IS: Add shortcut for EV adjustments (Allbest build)
« Reply #9 on: 15 / March / 2008, 14:01:39 »
I failed till now, trying my sd200 things again.

 

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