Re: gamut warning failure
Re: gamut warning failure
- Subject: Re: gamut warning failure
- From: Pat Herold <email@hidden>
- Date: Mon, 16 Oct 2006 13:35:33 -0700
Eugene,
So , am I right in assuming that if both Colorthiink and Adobe are
using the
same table to ³infer² the gamut range of the output profile then
there would
be no explanation for any discrepancy between them?
Eugene Appert
Please forgive my ignorance but, to be honest, I confess I never
knew how to
reveal out-of-gamut color using ColorThink. Maybe we can get Steve
Upton
involved here and give us a few words about his method?
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
From: Roger Breton <email@hidden>
The way I understand it, the gamut of a device is inferred from a
profile
device to Lab table. To my knowledge, that's usually the table used by
ColorThink and other 3D viewers to draw the shape of the device
gamut in
OpenGL or other 3D visualization scheme.
Steve is on his way to Graph Expo in Chicago at the moment, but I can
probably chime in here for him:
ColorThink does use the Device to Lab table by default to create the
3D gamut. Most other graphing applications don't - they go Lab to
Device. This way ColorThink shows the actual gamut of what the
printer is able to reproduce - which is what most people want to see
in a 3D graphing application.
It is still unknown what Adobe actually uses to come up with the
gamut warning. I know Steve himself talked with Adobe concerning
this very subject and was never able to get a definitive answer from
them.
He has a post on the ColorForums site that goes into graphing in
greater detail:
http://www.colorforums.com/viewtopic.php?t=329
Pat Herold
email@hidden
206.985-6837 ext #6
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