Hello Daniel,
If you want a certain Black % value, like 5%, as in your example, in my
opinion, you need to have a profile that has a certain kind of Black
Generation. Graeme would know better than me. With Argyll’s profiles, it’s
always GCR Black Generation strategy. So, for a given Lab value, if you want
Black to be a certain percentage, you may not find what you want? I suggest you
first create the profile and see what you get. That will give you a starting
point. And report back here 😊
MfG / Roger
From: argyllcms-bounce@xxxxxxxxxxxxx <argyllcms-bounce@xxxxxxxxxxxxx> On Behalf
Of Daniel Pfeiffer
Sent: Tuesday, April 14, 2020 8:41 AM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Profile lookup with fixed device values
Hello Color Friends,
I wonder if there is a way to look up a profile to get device values for an
intended color when one or more separation values are already given.
Of course, when certain channel values are fixed, there is probably no perfect
match possible. But that's not necessary for my application. I just need the
closest set of variable device values.
For instance:
- Some CMYK profile to lookup
- Target Color: L* 70 / a* 0 / b*0
- Given: Magenta 25%, Black 5%
Wanted Values = C, Y + Delta E to Targed Color
Any ideas?
Mit freundlichen Grüssen
Best regards
Daniel Pfeiffer
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