Re: Trouble with PhotoCAL & Apple 17" LCD
Re: Trouble with PhotoCAL & Apple 17" LCD
- Subject: Re: Trouble with PhotoCAL & Apple 17" LCD
- From: "Andrew Rodney" <email@hidden>
- Date: Thu, 26 Sep 2002 11:41:01 -0600
on 9/26/02 10:56 AM, Pablo Roufogalis L. at email@hidden wrote:
>
Agreed. But regarding just the monitor display profile, I'm getting all the
>
color management available. is that right?
Yes and no. If you have the right display profile loaded (the profile that
actually fingerprints your display), then in an ICC savvy application, the
application looks at the numbers in the file and the embedded profile and
uses that information along with the display profile to produce a correct
preview. In a non ICC savvy application, the display is in a certain
condition and the numbers in the file are sent directly to the screen. So
take a file in Adobe RGB 1998 and when you view it in a non ICC savvy
application, it looks wacked out. IN an ICC savvy application, the numbers
in the file (described by the profile) AND the display profile insure that
the preview is correct.
>
I understand that without a source profile, what is shown in the monitor is
>
not an valid representation of the file but the OS is doing corrections
>
based on the monitor profile chosen in the control panel.
As far as Photoshop is concerned, if you don't have an embedded profile, it
just guesses what the embedded profile should have been. That's a guess
Photoshop makes based on your color settings. Photoshop is always behaving
the same way but when you don't specifically tell Photoshop the embedded
profile, it takes a guess. So if you have an untagged file in Adobe RGB AND
your RGB Working Space is set to Adobe RGB, you end up with the correct
preview (because Photoshop is making the correct guess). At the same time,
if you have an untagged file that is really sRGB, Photoshop is assuming the
file is Adobe RGB and your preview is all wrong. But in either case,
Photoshop is using the same behavior (take the file, it's meaning and the
display profile and produce a preview0.
Andrew Rodney
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