Re: soft proofing of spot colours / Adobe / ISO standards
Re: soft proofing of spot colours / Adobe / ISO standards
- Subject: Re: soft proofing of spot colours / Adobe / ISO standards
- From: Jan-Peter Homann <email@hidden>
- Date: Thu, 24 Jan 2008 12:04:05 +0100
Hello list,
Currently overprinting results and tints / gradation of spot colors are
not described in the ICC specs.
But if you look at Photoshop, you are able to manipulate the opacity
which results to different overprinting results and you can define a
gray profile as representation for the tints / gradation of the spot
colors. This is working very fine in ICC based environments.
I havn´t tested yet, if the opacity-informations and the assigned
grayscale ICC-profile are used in Acrobat, but I would expect that it
should work.
Adobe is very active to promote PDF as an ISO standard and also the
ICC-specs are now an ISO standard. So it would make a lot of sense to
describe the Adobe model for spotcolor opacity and gradation both in the
ISO-standards for PDF and ICC-profiles.
Regards
Jan-Peter
Roger Breton wrote:
Hey Matt,
After reading all the other posts, I completely forgot to mention that,
without more advanced plug-ins or other software, only the solids can
dependably be simulated on the display (the in-gamut colors), not their
overprints nor their tints. That's way too complicated for anything ICC.
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