Re: U.S. Web Coated (SWOP) v2 using GCR or UCR?
Re: U.S. Web Coated (SWOP) v2 using GCR or UCR?
- Subject: Re: U.S. Web Coated (SWOP) v2 using GCR or UCR?
- From: Roger Breton <email@hidden>
- Date: Sun, 02 Apr 2006 21:41:41 -0400
> I've been studying of our basic 'U.S. Web Coated (SWOP) v2' profile
> and am wondering if anyone has information regarding the use of UCR
> or GCR gray-component replacement built into the profile.
>
> I have discovered that the black generation starts at 45% and
> generally follows generally 'light' to 'medium' black generation
> curve (how would anyone describe a curve without a mathematical
> equation).
>
> I would normally expect a GCR separation to push more black into my
> neutral areas in my quarter tones, but have not seen much (if any) of
> that behavior in U.S. Web Coated (SWOP) v2 separations. Of course, if
> this profile is built with a GCR sep, how much?
>
> Thanks!
One of these days (or maybe it has already happened and I'm the last to
know!), Adobe is going to fully document its bundled color profiles. That's
the promise we were given by Peter Constable during the last GATF Color
Management conference in Phoenix. But until then, your guess is as good as
anyone's. I tend to believe that US WebCoated SWOP v2 uses UCR for black
generation. Although when I compare it with other CMS's profiles, generated
from the same TR-001 data set, I sometimes get the impression that its more
GCR than UCR. But when I use if to convert portraits to CMYK, for instance,
then I don't get the impression that the black runs all that deep in the
separation. To me, it's a UCR profile.
Anyone else?
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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