Re: Monitor calibration
Re: Monitor calibration
- Subject: Re: Monitor calibration
- From: Roger Breton <email@hidden>
- Date: Thu, 18 Oct 2001 13:28:01 -0400
Neil
I would venture to say that Photoshop SHOULD display identically, too,
regardless of color temperature calibration (D65 vs D50). I am just curious
whether Chris Cox would agree? I agree that 1.8 vs 2.2 displays indentically
with color management ON. And I believe that Photoshop will display
indentically whether D50/1.8 or D65/2.2 or D50/2.2 or D65/1.8 is chosen for
calibration. Now, does that mean that all of the above will yield
"comparable" match to a print illuminated in a D50 lightbox?
I remember once measuring the inside of a GTI D50 Viewer with a Spectrocam
in its "spectral camera" mode and comparing, still in spectral camera mode,
with the face of my monitor, holding the Spectrocam at a distance of about
10 inches from the screen. My monitor was calibrated then for D65/2.2
(calibrated with the Spectrocam + Prove it! 2.0.2). Well, the viewing booth
"measured" 6756 K and yielded 2539 Candelas / m2 while my monitor "measured"
6700 K (forgot to write down its illuminance).
Don't you think there's something "fishy" with the inside of a viewing booth
measuring 6756 K when ANSI PH2.30 is written all over the enclosure? How can
a product sold for D50 proofing measure 6756 K? So there you have it. It's
one of those apparently irreconcilable conceptual "facts" that a screen,
calibrated to D65 appears to match better viewing booth designed for D50
viewwing?
As a note, I have gone back to D50, these days. But I stick to a gamma of
2.2 which I believe is the right conceptual thing to do.
Roger Breton
Laval Quibec
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Roger
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since with non apple branded monitors the native gamma is said
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to be nearer 2.2 than 1.8 the consensus now seems to be to set
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it to 2.2. Remember that profile savvy apps will compensate for
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the chosen setting so - say Photoshop will display identicallly
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on 1.8 and 2.2 [that's the theory].
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I choose 6500 because it seems to give a better match to a
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print illuminated in a DE50 lightbox.