for that reason we developed FOGRA53, a print referred large gamut exchange
colour space.
https://www.fogra.org/en/fogra-research/wc-digital-printing/digital-printing-current-projects/consolidating-standardization/research-topics/large-gamut-exchange-space/a-large-gamut-exchange-space.html
<https://www.fogra.org/en/fogra-research/wc-digital-printing/digital-printing-current-projects/consolidating-standardization/research-topics/large-gamut-exchange-space/a-large-gamut-exchange-space.html>
It is "proofable“ and can therefore be used as a universal reference (printing
the expected), where you can actually use dE76 for the difference between proof
and reproduction (which makes no sense for Adobe98 to print comping from an
image depending mapping or a general one). So if you insist on high quality
colour reproduction (contrary to "it should be nice and I will always get the
„best“ out of it“).
regards
Andy Kraushaar
Register for the Fogra colour management symposium 2018 !
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Fogra Graphic Technology Research Association
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Am 10.07.2017 um 20:09 schrieb Nikolay Pokhilchenko (Redacted sender
"nikolay_po" for DMARC) <dmarc-noreply@xxxxxxxxxxxxx>:
There is not much sense to build universal profile with AdobeRGB1998-to-paper
mapping. For most of real images your prints will be overcompressed. The
profiler is squeezing too large source gamut into somewhere not that large
print gamut. For most of images which gamut is not reaches all the
AdobeRGB1998 boundaries this compression will be too high. This was my first
disappointment almost 10 years ago. I've started my color experiments in 2006
and remember ArgyllCMS beta 0.6...
That is why I'm proposing to store the images in large enough synthetic
matrix profile color space but printing them only with individual color
mapping while using image gamut as a source.
Currently I can't say much about best softproof profile for editing purposes.
Sure it is useless to use AdobeRGB1998 source mapped profile as an instrument
for preview gamut checking while using same space for editing. It is better
to use for preview the profile without a mapping, without of gamut
compression just to check out-of-gamut colors which will take more attention.
понедельник, 10 июля 2017г., 20:48 +03:00 от Charlie
dmarc-noreply@xxxxxxxxxxxxx <mailto:dmarc-noreply@xxxxxxxxxxxxx>:
I made a profile for Red River Aurora Art Natural matte paper. From the
.gam file:
Home-made profile:
CSPACE_WHITE "96.474872 0.592788 1.026801"
GAMUT_WHITE "96.474872 0.592788 1.026801"
CSPACE_BLACK "18.378824 0.927170 1.620395"
GAMUT_BLACK "18.378824 0.927170 1.620395"
Red River's profile:
GAMUT_CENTER "50.000000 0.000000 0.000000"
CSPACE_WHITE "96.858887 0.658193 3.065480"
GAMUT_WHITE "96.858887 0.658193 3.065480"
CSPACE_BLACK "2.839341 0.454370 0.545357"
GAMUT_BLACK "2.842807 0.454377 0.545449"
I used the ColorMunki Photo device and these commands:
targen -v -d2 -G -g51 -e8 -f638 -w -W RRAuroraNat
colprof -v -qh -SAdobeRGB1998.icc -cmt -dpp -P -DRRAuroraNat RRAuroraNat
The result has peak error 1.72, avg. error 0.34, RMS 0.4.
