Re: Profiling Cinema
Re: Profiling Cinema
- Subject: Re: Profiling Cinema
- From: Don Hutcheson <email@hidden>
- Date: Sun, 11 Nov 2001 10:30:19 -0500
Henrik wrote ...
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For RGB working space to monitor space transforms, compressing rather
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than clipping makes sense. For RGB working space to output CMYK space
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to RGB monitor space transforms, it does not make sense.
On the whole I would agree that gamut compressed monitor profiles are more
important for RGB images than CMYK, but I don't entirely agree with Henrik's
second sentence. This assumes the monitor fully encloses the CMYK space,
which is often not true. Good gamut compression can help avoid clipping in
saturated press colors and make for a more usable soft proof. Monitor
clipping is especially noticeable in deep reds which tend to go orange on
most monitors, but stay on hue (better) with ICC Display.
A big issue is the compression algorithm itself. For accurate soft proofing
on a sub-gamut monitor there is no ideal method that works for all images.
Gamut compression for proofing is almost a contradiction and needs to be
very focussed on ex-gamut colors with little intrusion on in-gamut space.
The best compression would be dynamic and image-dependent, but that awaits
intelligent application software and/or an intelligent CMM (don't hold your
breath) which in turn raises issues like standards and productivity.
The ideal solution would be a better display with richer RGB coordinates and
higher dynamic range. These are already in development and will probably be
affordable before intelligent CMMs.
But while we wait for displays, applications and/or CMMs to catch up, the
next best thing is a gamut-compressed monitor profile - that is if you can
live with the software's compression method.