Yves,
I went to RedRiver web site and downloaded their ICC profile for the
PaloDuro SGR for the Canon Pro1000, to compare with the Argyll profile you
already sent me. I opened a ColorChecker chart in Lab, in Photoshop, and
convert once to the "RedRiver" profile and once to the "Argyll" profile,
using Absolute Colorimetry. The result is that I could not see a difference,
on screen, in Photoshop, between the two images.
It's possible I downloaded the wrong profile from RedRiver?
I looked for "Palo Duro SoftGloss Rag" in this web page:
https://www.redrivercatalog.com/profiles/canon-pro-1000-icc-printer-color-pr
ofiles.html
I made a ZIP archive to show my results, if you're interested:
https://1drv.ms/u/s!AkD78CVR1NBqkodJb_VfMbAIupECFg?e=1D4ZMG
Whether Absolute or Relative, the results were practically "identical" in
terms of converted Lab values.
/ Roger
-----Original Message-----
From: argyllcms-bounce@xxxxxxxxxxxxx <argyllcms-bounce@xxxxxxxxxxxxx> On
Behalf Of Yves Gauvreau
Sent: December 23, 2019 8:50 AM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Profile analysis and correction
The following 2 images
https://www.dropbox.com/s/pga46o3sppmqrid/ColorCheckerC_Adobe2OEMRREtchin.pn
g?dl=0
https://www.dropbox.com/s/dho11m20rbr0npr/ColorCheckerC_Adobe2YGRREtchin.png
?dl=0
are the results of Gamut vision Analyze a "simulated color checker"
The first image, ColorCheckerC_Adobe2OEMRREtchin.png is this test for a
source profile of Adobe RGB to a Red River Palo Duro Etching paper using a
destination profile made by Chromix using the M3 filter (OEM profile).
The second image, ColorCheckerC_Adobe2YGRREtchin.png is the same test, using
the same paper but I made the destination profile using an I1 Studio and
Argyll tools (~1000 patches)
For both test, I use the colorimetric intent and black point compensation.
My profile as about 8 times more delta L* then the OEM one? Same target,
same paper, same inks and same printer, why such a difference? Can I, if not
fix it, at least reduce this difference to a minimum?
I have other metric I could show if of any help.
Thanks,
Yves
