New project: camera color profile calculation

lukg

162
Eos 450D+18-55is+55-250is & Powershot S5is - 1.01a

Re: New project: camera color profile calculation

« Reply #140 on: 20 / April / 2008, 06:44:36 »

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Ok, i will upload the 2 images in different archives! (it's not your connection, it's zshare that is slow)

Quote

Matrix transforms values from camera color sensors into a point of XYZ color space.

Ok, i think this is the answer i was searching for! Thanks

« Last Edit: 20 / April / 2008, 06:51:59 by lukg »

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arkanoid

7

Re: New project: camera color profile calculation

« Reply #141 on: 20 / April / 2008, 07:14:13 »

Quote from: ArtDen on 19 / April / 2008, 13:13:01

arkanoid,
you forgot to set focus to infinity.

really really sorry, I'll retry

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lukg

162
Eos 450D+18-55is+55-250is & Powershot S5is - 1.01a

Re: New project: camera color profile calculation

« Reply #142 on: 20 / April / 2008, 07:42:57 »

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« Last Edit: 20 / April / 2008, 08:08:32 by lukg »

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lukg

162
Eos 450D+18-55is+55-250is & Powershot S5is - 1.01a

Re: New project: camera color profile calculation

« Reply #143 on: 20 / April / 2008, 07:48:10 »

Here you are the first pic (RAW+JPG):

http://www.zshare.net/download/10836229f64fa23d/

And the second pic (RAW+JPG):

http://www.zshare.net/download/108369960be00f03/

And the palette pic (RAW+JPG) of my prev post:

http://www.zshare.net/download/103717017fc52496/

« Last Edit: 20 / April / 2008, 08:07:57 by lukg »

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arkanoid

7

Re: New project: camera color profile calculation

« Reply #144 on: 20 / April / 2008, 08:10:38 »

Just a simple comparison of same S5 image with different matrix conversions (opened with RawTherapee)

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lukg

162
Eos 450D+18-55is+55-250is & Powershot S5is - 1.01a

Re: New project: camera color profile calculation

« Reply #145 on: 20 / April / 2008, 13:58:45 »

Yes, using A720 matrix for S5 appears to be quite good in Camera Raw!

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ArtDen

175

Re: New project: camera color profile calculation

« Reply #146 on: 26 / April / 2008, 02:42:47 »

lukgp, you also forgot set focus to infinity and your image is too bright even with exp. comp = -2/3

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lukg

162
Eos 450D+18-55is+55-250is & Powershot S5is - 1.01a

Re: New project: camera color profile calculation

« Reply #147 on: 26 / April / 2008, 07:18:35 »

I'm quite sure i set focus to infinity (manual focus to infinity).
The problem is maybe the zoom...in the first post you tell to set the zoom to middle, but consider that this camera has 12x zoom, so I had to move a bit away from the monitor to take the picture!

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lukg

162
Eos 450D+18-55is+55-250is & Powershot S5is - 1.01a

Re: New project: camera color profile calculation

« Reply #148 on: 26 / April / 2008, 07:43:30 »

Ok, i took a new palette, but this time without zoom (just a little); it's impossibile taking the full palette and keeping image out of focus (infinity) at the same time, with such zoom (3x-6x). I also setted ex. comp. to -1 this time! Hope it is ok!

zSHARE - desktop.rar

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DawMatt

Re: New project: camera color profile calculation

« Reply #149 on: 01 / May / 2008, 09:26:25 »

Hi,

I've taken photos of the palette using an IXUS 860 IS (aka SD870).

Two sets of photos are included. The first pair (043) are from an LCD monitor, and the second pair (044) from an old CRT monitor. Personally I think the LCD monitor photos will be more useful for our purposes.
ixus860is_sd870_dng4ps2-calibration.zip - 21.89MB

I believe I implemented all of the requested settings listed in the first post in this thread. Please let me know if you need me to retake the photos fro whatever reason. And thanks for writing such a useful piece of software!

Thanks,
Matt

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