Re: Adobe RGB?
Re: Adobe RGB?
- Subject: Re: Adobe RGB?
- From: email@hidden
- Date: Thu, 14 Feb 2002 07:58:37 EST
In a message dated 2/13/02 5:14:17 PM, email@hidden writes:
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I want to switch to Adobe RGB as my RGB working space.
Thats pretty straightforward, especially wiht Photoshop 6, where mixed files
in assorted spaces at the same time are possible.
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I just got a G4 DP/800 and 222 Apple Cinema Display, LCD Monitor Spyder.
That should all work together with either of your workingspaces...
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I
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have been working in ColorMatch RGB for years. Although at times I did
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need
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to use Adobe RGB for closer matches to some spot blues, purples, etc.
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What is the best way to calibrate the 222 LCD for use with Adobe RGB?
That depends on whether you bought PhotoCAL or OptiCAL with it. Either way
you will want to rethink your luminance choices now that you have a much
brighter display available. You can choke it back to match a CRT, but thats a
shame... The best setting in OptiCAL is to use Native WhitePoint, which
should be about 6500 anyways. Setting the whitepoint to 5000k will do mean
things to the gray balance on the Apple Displays. There was a bug in some of
the recent PhotoCAL/OptiCAL releases that required a dot upgrade to fix a
gamma issue. Go to <
http://www.colorcal.com/software_upgrades.html> and
download the x.5.1 update to your software if you don't have it.
I
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did
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a test today against a Kodak Approval. On the old machine + crt, in
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ColorMatch RGB the Proof matches the monitor soft proof very well. The
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test
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file was created in ColoMatch RGB and P2P to the Approval9s profile.
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On the 222 LCD calibrated at 6500K and Gamma 2.2 the test file is way over
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saturated and if I use PS6 feature to desaturate the display,
Don't do that, you might as well be back in the days of the Knoll Gamma panel
if you start messing with that!
the yellows
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look horrible. If I calibrate the LCD to 5000K gamma 1.8. It looks almost
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as
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good as the crt. Do I calibrate to 5000k, gamma 1.8 and use Adobe RGB as
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a
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working space?
If thats the white point you need... but it should look fine at either 5000k
or 6500 once you're in Photoshop; if it doesn't there's another issue.
Some how that doesn9t seem right if Adobe RGB is 6500K Gamma
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2.2.
Don't confuse workingspace gamma with monitor gamma, they are independant
factors in most ways.
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The plan is to have a Lacie Electron19blueIII as the second monitor to
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double check the LCD. I9m guessing I will calibrate the Lacie19blue the
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same
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as the LCD?
You would calibrate both, but not necessarily to the same standards, that
would depent on the monitors. Running one LCD and one CRT on a the same
machine is rather jarring, due to the different technologies. Having both on
different machines would be fine for cross checks until you settle down to
trusting your CinemaDisplay.
>
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That is the goal, switch to Adobe RGB as the working space.
That should have nothing to do with these other issues, and should be left
out of hte equation as a confusing variable until you get your LCD
calibration correct.
If I have to
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pull up an old ColorMatch image I can decide then to convert to working
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space or just leave it ColorMatch.
Exactly...
C. David Tobie
Design Cooperative
email@hidden
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