Re: Epson No Color Adjustment Experiment
Re: Epson No Color Adjustment Experiment
- Subject: Re: Epson No Color Adjustment Experiment
- From: Chris Murphy <email@hidden>
- Date: Tue, 23 Dec 2003 14:06:25 -0700
On Dec 23, 2003, at 12:45 PM, John Fieber wrote:
The only way I've found that Photoshop tags the stuff going into the
print queue with the actual proper profile for the data is if you
select "PostScript Color Management" (PS7) or "Printer Color
Management" (PS8). I missed this option for a long time in PS7
because it didn't mentally register as being relevant when printing to
my decidedly non-postscript printer.
You could call it a "missing in action" bug. What's supposed to happen
is it automatically says "PostScript Color Management" if you have a
PostScript printer as the current (or last) driver selected; and if
it's not then you automatically get "Printer Color Management." In 7
the automatic switching was MIA, but the functionality was still there.
"Same as source" only works if your source happens to be your output
device profile and you select "No Color Adjustment" in the print
driver when printing. If either of those two criteria don't hold,
you will not get correct colors.
I think what you mean is that unless you use Printer Color Management,
OR Same as Source - the PDF spool file from Photoshop is not properly
tagged. Instead it gets mistagged as Generic RGB, but the silver lining
is that if you use anything but ColorSync, Generic RGB gets used as the
destination which causes a null transform to occur.
I am experiencing intermittent strange behavior when RGB Default is not
set to Generic RGB in ColorSync preferences when printing. Sometimes
things come out the way I expect, and other times they are coming out
green (keeping the RGB Default set to an Epson 2200 printer). This is
just such a major clusterf*ck I don't even know how to begin
complaining except to call it a major clusterf*ck twice in a row. And
based on John's description of what's not supposed to happen with these
settings, it shouldn't be happening, and yet here I am experiencing it
randomly if RGB Default is not set to Generic RGB.
It's the sort of thing that makes me turn into Eric Cartman with the
v-chip installed in him. "Crap!" BZZTTT! "Ow! Dammit!" BZZZT! I just
keep getting shocked at how screwed up this is.
The trouble with this scheme for "No Color Adjustment" is that the
option doesn't do what it implies. Take a tagged (say, Adobe RGB)
image and drop it in TextEdit.app. TextEdit edit deposits the Adobe
RGB image data directly in the PDF tagged with (surprise!) the Adobe
RGB profile like a well behaved color managed Cocoa application. The
print systems sees the destination profile as Generic RGB and
dutifully converts the Adobe RGB data to Generic RGB, which then goes
to the printer.
Hummm - yeah well what you're supposed to do is select ColorSync in the
printer driver, which should cause the driver grabbing the ColorSync
Current Profile setting for that printer/media being used, and pass
that on as the destination to the OS. Yet I've also seen *that* not
work compared to using the exact same (theoretical) source and
destination profile in Photoshop.
This behavior is obviously not "No Color Management" and, Dear Apple
Computer Inc., this is another reason why the null-transform hack for
disabling color management must be replaced with a PROPER means for an
application (as opposed to a printer driver) to disable colorsync
processing while printing. Granted, the utility of using No Color
Management with TextEdit is dubious, but that just emphasizes the
point. If it makes sense for an application to disable color
management, the application needs to be able to do it with certainty,
and provide the user interface for doing it.
There are *reasons* why color management has a bad reputation. This is
one of them. And once Apple has a fix, will it retroactively apply the
fix for 10.3 users, let alone 10.2 users? Or is this just the sort of
thing that if you want it to work correctly we'll have to pay for yet
another bug fix update in 10.4? This has reached a whole new level of
insanity for what consumers are expected to put up with.
Chris Murphy
Color Remedies (TM)
www.colorremedies.com/realworldcolor
---------------------------------------------------------
Co-author "Real World Color Management"
Published by PeachPit Press (ISBN 0-201-77340-6)
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