Re: Epson Printers/Colorsync/OSX
Re: Epson Printers/Colorsync/OSX
- Subject: Re: Epson Printers/Colorsync/OSX
- From: bruce fraser <email@hidden>
- Date: Fri, 11 Oct 2002 18:31:59 -0700
At 5:07 PM -0700 10/11/02, Dave Camp wrote:
On Friday, October 11, 2002, at 02:16 PM, Cris Daniels wrote:
How exactly are you supposed to print targets? Double color management
is
impossible to avoid if you are printing in any way to an Epson printer
unless
you choose Colorsync color management within the driver. Thats what I
read
into this.
Last time I brought this up, they acknowledged it was a fundamental
problem. However, it should be possible to work around it by giving the
target the same profile as the printer. No ColorSync transform should
happen in that case.
We've been around this particular block several times....
First, I can say with something approaching absolute certainty
(having done it more times than I care to count) that printing a
target from Photoshop to an Epson, selecting Same as Source in
Photoshop's Print Space, and No Color Adjustment in the Epson driver
Color Adjustment controls, produces identical results under any Mac
OS under which Photoshop runs. (Identical as in, the differences are
below the threshold of repeatability of the instruments --
Spectrolino, EyeOne, DTP-41 -- used to measure the targets.)
There are APIs in ColorSync that allow smart apps to deliberately
bypass OS color management. What's changed is that it's no longer
possible for dumb apps to be inadvertantly non-color managed.
Apple could have done a better job of expressing this in the
documentation, but I can assure everyone on the list that it's
perfectly possible to print a profiling target without having it
munged by ColorSync. Just don't print it from Preview...
Bruce
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