Re: U.S. Sheetfed vs. U.S. SWOP
Re: U.S. Sheetfed vs. U.S. SWOP
- Subject: Re: U.S. Sheetfed vs. U.S. SWOP
- From: Steve Bonoff <email@hidden>
- Date: Wed, 2 May 2007 08:01:58 -0500
If you're looking for more details on the new SWOP specifications
that Mike Eddington mentioned, there is a new publication that
combines both SWOP 11 and GRACoL 7 specifications. You can purchase
it at http://www.printtools.org/publications/idealliance07.php
There's also new G7 Calibration Kits available with all of the tools
necessary for measuring color and controlling both the proofing and
printing processes. It's available at http://www.printtools.org/
digitalcalkits
Steve Bonoff
IPA
800-255-8141
www.ipa.org
On May 2, 2007, at 7:21 AM, Mike Eddington wrote:
Thought I goofed so I looked at the profiles again and confirmed
that
I
was looking at US Sheetfed Coated rather than the UnCoated. Yes, the
profile appears smaller in gamut volume than US SWOP in the
ColorSync
utility using the Yuv view. Any suggestions on how to empirically
evaluate
the gamut of a profile when comparing to another profile?
I was using ColorThink Pro, and also Monaco Gamut Works which both
show
the US sheetfed Coated profile as larger than the US SWOP
profile...but
yeah, I can confirm what you're saying. The Colorsync utility shows it
as a smaller gamut. After viewing some other profiles of mine, I must
say I'm clueless as to what's going on with how the colorsync utility
displays gamut volume as there's some very strange plots compared to
what ColorThink and GamutWorks come up with. In short, I don't trust
it.
Can anyone offer any insight the differences between the Colorsync
Utility's gamut plots compared with say ColorThink Pro?
Good information on the source for the profile.
I mentioned in the last post new characterization data and profiles
available from SWOP...specifically the new profiles are created
from the
SWOP2006_Coated3.txt, SWOP2006_Coated5.txt and GRACoL2006_Coated1.txt
datasets. Both profiles and data sets are available at either
www.swop.org or www.gracol.org. These aren't available in any
version of
Photoshop, so if you want the latest SWOP/Gracol profiles, you
gotta go
get 'em.
Michael Eddington
North American Color, Inc.
www.nac-mi.com
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