Re: Re(6): embedded profiles in PDF/Postscript
Re: Re(6): embedded profiles in PDF/Postscript
- Subject: Re: Re(6): embedded profiles in PDF/Postscript
- From: Doug Walker <email@hidden>
- Date: Thu, 24 Jun 2004 08:17:54 -0700
On Sunday, June 6, 2004, at 04:08 PM, Chris Murphy wrote:
ICC profiles do not exist in a PostScript stream. They get converted
to PostScript CSA's. So to do this, you'd be asking for a less than
high quality conversion asking the PostScript interpreter to convert
from CSA tagged RGB to a CRD destination; and then once it's
normalized to PDF to get tagged properly with the originally ICC
version (from which the CRD was created). I don't think this is a
particular useful workflow myself, and I think Adobe probably
disregarded it as well because it makes very device dependent PDFs
which Adobe tries to avoid unless it's one of the PDF/X-s.
If you want something like this, the solution is to tag everything or
tag only images. Any CSA's get converted to ICC profiles and tag those
objects. At print time, you select the destination profile and at that
time content is converted to CMYK. InDesign's PDF export will also do
what you are asking, and it's easier there just because there is no
distillation process. Everything stays PDF, in an ID PDF export, there
is no PostScript.
Chris,
Is the statement above ONLY referring to RGB files and NOT CMYK files
or both?
If a Quark 6.0 document containing CMYK images tagged w/ the profile
(US WEB Coated SWOP v2) gets exported to Postscript, and you say ICC
profiles do not exist in a PostScript stream......I am wondering if I
send tagged CMYK TIF files to Quark 6.x documents if I need to be
concerned.
Thanks for clarifying.
Doug Walker, FP
"Specializing in Corporate People in their Workplaces in a Clean, Bold
Classic Style!"
website:
http://www.walkerphoto.com
Phone (360) 943-1293
Member, ASMP, APA SF
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