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SD990

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Offline Marcel2087

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Re: SD990
« Reply #10 on: 20 / February / 2009, 01:51:55 »
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Wow, that's great news. Sounds like it won't be long now and Canon's best compact camera will get the features it deserves. Many thanks already to you, reyalp :-)
I guess mszaller (in this thread http://chdk.setepontos.com/index.php/topic,3005.0.html) will be happy to hear the progress, too :-)
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Offline jak5280

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Re: SD990
« Reply #11 on: 20 / February / 2009, 15:55:22 »
Reyalp,

I'm keen to test things as soon as you get something working. I'm very appreciative of your efforts.
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Offline reyalp

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Re: SD990
« Reply #12 on: 22 / February / 2009, 05:18:56 »
No screenshots, but making progress.

UI/OSD is pretty much fully functional. Zebra is broken.

CaptSeqTask runs, raw is captured (22.5 MB each, saves surprisingly quickly) but only every other shot goes to the address I'm using. Need to find the variable that controls this.

Optical zoom in video works.... sometimes.

lua libtest runs without errors.
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Offline Marcel2087

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Re: SD990
« Reply #13 on: 22 / February / 2009, 05:41:08 »
Amazing! That's quick progress. There are many "first-times" with this camera, right? Digic IV, 15MP, 12 bit RAW files (if the last 2 bit (compared to SD770) contain some information other than noise) and maybe even manually adjustable aperture? I hope it is (and keeps being) fun for you, as it seems like without you there wouldn't be a port for this camera for a long, long time...
Thanks!
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Offline reyalp

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Re: SD990
« Reply #14 on: 22 / February / 2009, 06:03:57 »
No manually adjustable aperture, only an ND filter. That part is the same as the other ixus. There are some difference from other cameras, but nothing too huge so far.

The raw files aren't really usable, because there aren't any programs that know how to convert them. I've just been using irfanview "open as->raw" to see the pixel values. I can tell if it's the picture I took or random memory garbage, but that's about it.
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Offline ewavr

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Re: SD990
« Reply #15 on: 22 / February / 2009, 06:41:58 »
Quote from: reyalp on 22 / February / 2009, 06:03:57
The raw files aren't really usable, because there aren't any programs that know how to convert them.

Maybe is possible to convert 12 bit RAW to 10 bit (converter), then use DNG4PS2 (see ixus85 topic on page 5) or modified DCRAW.
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Offline Marcel2087

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Re: SD990
« Reply #16 on: 22 / February / 2009, 06:48:02 »
hmm...I also read in sharky's SD770 thread that it's difficult to create a usable RAW file without knowing anything about the used color spectrum (or manually creating a calibrated profile). Is this the same with every CHDK release or can the older, more mature chdk releases really get a usable RAW file out of the ixus?
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Offline hnikesch

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Re: SD990
« Reply #17 on: 22 / February / 2009, 11:32:58 »
Quote from: Marcel2087 on 22 / February / 2009, 06:48:02
Is this the same with every CHDK release or can the older, more mature chdk releases really get a usable RAW file out of the ixus?

yes 10 bit raw images are usable on my SD 500 and SD900(CHDK Beta)
« Last Edit: 22 / February / 2009, 11:34:42 by hnikesch »
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Offline Marcel2087

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Re: SD990
« Reply #18 on: 22 / February / 2009, 12:06:25 »
hnikesch, sounds good. Did you have to do any manual color calibration or did a standard Canon profile work as well?
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Offline reyalp

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Re: SD990
« Reply #19 on: 22 / February / 2009, 15:52:40 »
Quote from: Marcel2087 on 22 / February / 2009, 06:48:02
hmm...I also read in sharky's SD770 thread that it's difficult to create a usable RAW file without knowing anything about the used color spectrum (or manually creating a calibrated profile). Is this the same with every CHDK release or can the older, more mature chdk releases really get a usable RAW file out of the ixus?
dng4ps and dcraw (along with various programs that use the dcraw source) handle the 10 bit CHDK raw fairly well for the most part.

12 bit RAW will need the same sort of thing. dcraw actually supports 12 bits for some cameras, but the code makes my head spin.
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