[argyllcms] Re: ArgyllCMS: shadow details and blue color issues. What I'm doing incorrectly?

  • From: Nikolay Pokhilchenko <nikolay_po@xxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 24 Oct 2012 10:39:14 +0400

Wed, 24 Oct 2012 02:06:02 +0200 "Xavi" wrote:

>Then, on Photoshop I create 4 rectangles, that I fill, one by one, with the
>RGB values obtained. I save them on Tiff format and I print the file with
>the same program and the same printing options that I have used to print the
>test chart.Hello, Xavi!
I think You can introduce the error at this stage because there may be a 
difference between AgyllCMS chart image generation and the Photoshop.
Try to print the target in attached Test4.zip the same way as You have printed 
the targets for MP_B01_396p64g3bArgyllv140_121011.ti3.
Then read the chart the same way as You've read 
MP_B01_396p64g3bArgyllv140_121011.ti3 (I'd recommend the reading in the strip 
mode, not patch-by-patch).
After reading, compare the targets:

verify.exe -v Test4.ti3 Test4_fakeread.ti3
And You'll see actual workflow errors.

By the way, the patch 29.000000 14.000000 50.000000 [Lab] is out-of-gamut for 
Your printer. You can't check the tolerance by out-of-gamut colors. So, it's 
Lab value was replaced by the nearest possible (by xicclu -fif then -ff): 
46.397 13.620 42.779

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