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CHDK Spotmeter

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Offline outslider

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Re: CHDK Spotmeter
« Reply #20 on: 08 / January / 2012, 07:02:33 »
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Walking on Internet I've found someday a CHDK-based project that was designed to work as a light-meter. But I can't find it now... I even don't remember the name of the project. I'll try to find it.
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Offline an0n

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Re: CHDK Spotmeter
« Reply #21 on: 08 / January / 2012, 10:23:29 »
Quote from: outslider on 08 / January / 2012, 07:02:33
Walking on Internet I've found someday a CHDK-based project that was designed to work as a light-meter. But I can't find it now... I even don't remember the name of the project. I'll try to find it.

Is this what you were looking for ?
 http://chdk.setepontos.com/index.php?PHPSESSID=7973386aacdc6fb7e1b409702af56bbb&topic=5348.msg51863#msg51863
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Offline towolf

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Re: CHDK Spotmeter
« Reply #22 on: 08 / January / 2012, 10:40:35 »
An0n, I had started from scratch and then discovered the script you linked to and modified it, but the limitation I’ve given above emerged.

I got to the point of having a script that gave me power of two times in seconds, which is not precise enough. Any other solution working with fixed point were either too cryptic to use or would require a pocket calculator to convert to human values. I didn’t want to look at implementing fixed-point math.

Thanks, fudgey, BTW.
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Offline outslider

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Re: CHDK Spotmeter
« Reply #23 on: 08 / January / 2012, 11:08:31 »
Quote from: an0n on 08 / January / 2012, 10:23:29
Quote from: outslider on 08 / January / 2012, 07:02:33
Walking on Internet I've found someday a CHDK-based project that was designed to work as a light-meter. But I can't find it now... I even don't remember the name of the project. I'll try to find it.

Is this what you were looking for ?
 http://chdk.setepontos.com/index.php?PHPSESSID=7973386aacdc6fb7e1b409702af56bbb&topic=5348.msg51863#msg51863

No I mean CHDK-fork. Maybe it was the same that Kuku posted above...
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Offline Microfunguy

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Re: CHDK Spotmeter
« Reply #24 on: 08 / January / 2012, 12:01:25 »
Luminance and chroma spotmeter http://stereo.jpn.org/eng/sdm/ubasic.htm#ub11
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Offline towolf

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Re: CHDK Spotmeter
« Reply #25 on: 10 / January / 2012, 21:23:04 »
Quote from: Microfunguy on 08 / January / 2012, 12:01:25
Luminance and chroma spotmeter http://stereo.jpn.org/eng/sdm/ubasic.htm#ub11

Quote there: The values are read from the live-image buffer and the correlation with the real scene values is not known.

This might have an academic interest, but it’s not useful for photography. The thing is, I can display the measured fractional EV with the OSD, and that looks good. I just need to do some simple math with it and provide some comvenient ways to change metering settings. This is what the OP did in C.

I just need to find the time to look into this stuff, merge it and then do my modifications. I’m sure adding a light meter mode with calculations is much more useful in a camera than playing reversi.
« Last Edit: 10 / January / 2012, 21:25:41 by towolf »
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Offline Microfunguy

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Re: CHDK Spotmeter
« Reply #26 on: 10 / January / 2012, 22:34:58 »
Quote from: towolf on 10 / January / 2012, 21:23:04
I’m sure adding a light meter mode with calculations is much more useful in a camera than playing reversi.

That is what I like to hear, it is also my philosophy.

However, there will always be people who like chrome-plated car parts or 'go faster' stripes.

Someone has to provide for them !
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Offline fudgey

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Re: CHDK Spotmeter
« Reply #27 on: 16 / January / 2012, 16:37:06 »
Oh, this is definitely related, right?

https://github.com/pronvit/chdk-lm
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Offline towolf

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Re: CHDK Spotmeter
« Reply #28 on: 16 / January / 2012, 16:42:10 »
Quote from: fudgey on 16 / January / 2012, 16:37:06
Oh, this is definitely related, right?

https://github.com/pronvit/chdk-lm

Yes, that's the github version of the dead Google Code hg repo.
But this is just a an exported CHDK tree with no information and no diffs.

From what I could glean, this works like a an additional OSD overlay, basically a table with settings. But it could be more. Just diffing this with the current trunk gives too many changes.

On Google you can see a .doc file related to this, but it's inaccessible.
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