[argyllcms] Re: camera profiling with newest version of Argyll

  • From: Anders Torger <torger@xxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 26 Aug 2015 16:50:40 +0200

Are you using Capture One? The EXIF tags seems to suggest that.

I didn't think pure matrix profiles worked at all with Capture One, as
it expects the ICC to apply a gamma?

You can look at the TIFFTAG_TRANSFERFUNCTION in the exported TIFF to
see what you need to do to get linear data.

If you want you can look at my project DCamProf which has some specific
features to handle the quirks of Capture One. It's still a work in
progress though.


On 08/26/2015 04:22:51 PM, Chad Johnson wrote:


I'm attempting to build a color profile of my camera and I'm not able
get a reasonable result with v1.8.0. The last time I profiled my
was with v1.5.1 and the results were good. The following is a
version of my workflow which I'm using for this particular test. I
executed everything exactly the same in both versions of the

scanin -v -dpin IMG_4147.tif ColorCheckerSG.cht

colprof -v -D"CanonEOS70D" -qh -am -u IMG_4147

The file "IMG_4147" is a 16bit TIFF file created with a linear
and no color profile and no adjustments of any kind.

I went back and made images by applying the icc profiles that were
created from the above process. The results can be seen in the
files. The file created with the v1.8.0 is very washed out and too
bright compared to the one created with v1.5.1.

version 1.8.0: https://flic.kr/p/wTNrFL
version 1.5.1: https://flic.kr/p/wTNrMh

Thanks in advance for any help you can offer to me!

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