Custom profiles, Leopard (possibly Tiger and earlier OS X version) and Colorsync architecture
Custom profiles, Leopard (possibly Tiger and earlier OS X version) and Colorsync architecture
- Subject: Custom profiles, Leopard (possibly Tiger and earlier OS X version) and Colorsync architecture
- From: Jean Wallemacq <email@hidden>
- Date: Sun, 3 Feb 2008 12:48:35 +0100
Hi everone,
I am relatively newby to colormanagement & to the colorsync mailing
list in particular. So if this topic has been posted earlier, please
excuse me and refer me to the appropriate material.
I am using a Spyder3Print from Colorvision/Datacolor to profile my
ip5300 Canon ink-jet printer. The profiling is done with "color
management" set to off in the printer driver. I want to use this
custom profile instead of the bundled ones.
Route A. I get good results by going the "traditional" route i.e.
"ignoring" colorsync by doing the profile matching in Photoshop at
print time, and setting the printer driver to "no color management".
Route B. The only way I get some good results with a "colorsync" route
is to match the profile in whatever program (Preview f.ex.), then
STRIPPING the profile via the Apple provided applescript and printing
via Preview, once more with the printer driver set to "no color
management".
Route A & B are similar in the following manner: doing a preview at
print time show strange colors - looks like the preview is showing the
rgb numbers literally sent to the printers; as expected, very
different that the ones appropriate for the screen.
I read the following at http://www.colorwiki.com/wiki/ICC_Profiles_and_Printers_in_Mac_OSX
(somewhat dated:2002, but still valid?)
There does not appear to be a print path that allows the complete shut-
off of all color management transforms. This is a necessary state for
the proper printing of the profiling targets used when creating custom
profiles. This does not mean that printers cannot be profiled, but any
profiling will have to be on top of whatever color management is
happening in the drivers. These profiles would be usable upstream of
the drivers - such as by Photoshop 6.x - but will probably not be
usable for substituting the stock printer profiles as mentioned above
[in Colorsync utility]
This is consistent with my own experience with ColorSync.
Questions
1/ Is the remark at Colorwiki (Chromix) still valid today? IMHO, this
makes the colorsync architecture almost useless for printing
2/ Are there alternative routes for printing in addition to A & B
3/ Is there a way to make a profile compatible with the Colorsync
architecture?
Cheers
Jean Wallemacq
BTW: I always let the "color matching" option in the GENERAL print
dialog on "managed by the printer", not colorsync. When I refer to
the "color management" above, I mean the checkbox in the dialog
SPECIFIC to the printer, as discussed in http://digitaldog.net/files/Epson_Driver_Leopard.pdf
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