Re: Can user switch off Display color management?
Re: Can user switch off Display color management?
- Subject: Re: Can user switch off Display color management?
- From: bruce fraser <email@hidden>
- Date: Fri, 27 Sep 2002 17:22:33 -0700
At 5:58 PM -0600 9/27/02, Dan Reid wrote:
This is how it works in 10.1 but not in 10.2 (Jaguar)
Now the assumption is based on your default RGB profile and not the system
profile.
10.2 did away with the system profile thing all together and now only allows
you to designate your monitor profile in the display control panel (system
preferences) or the Colorsync Utility app.
In any event, assumption for untagged RGB objects is the RGB default profile
in the ColorSync control panel.
The nitty gritty updated for 10.2 (at the bottom)
http://developer.apple.com/technotes/tn/tn2035.html
I'm afraid there's some wishful thinking in the technote. The current
reality is quite a bit greasier.
For example.
If you use command-shift-3, the resulting PDF screen shot has Generic
RGB embedded. But if you use command-shift-4 then make a selection,
the resulting PDF screen shot has the display profile embedded.
Any untagged data in a PDF gets the "Generic RGB" or "Generic CMYK"
profile, not the default profile specified in ColorSync, embedded
when you save it.
But...
According to John Zimmerer
" Preview does use embedded profiles and matches to the primary
display profile. Absent an embedded profile, no on screen matching is
currently performed, but if an imaged is saved or printed, Jaguar
uses the appropriate Generic Profile for untagged data."
In fact, I've yet to find a situation where ColorSync performs
display matching using the RGB default profile in the ColorSync
control panel...
Bruce
--
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