Martin's BPC question
Martin's BPC question
- Subject: Martin's BPC question
- From: Nick Wheeler <email@hidden>
- Date: Tue, 16 Dec 2003 08:28:27 -0500
Martin:
Black Point Compensation is something Adobe added to it's color engine
to make Relative Colorimetric conversions act more like perceptual
conversions in the blacks and dark colors. My understanding and my
observations indicate that BPC changes nothing and does nothing when
perceptual rendering intent is used.
This of course begs the question: why is it enabled when using
perceptual rendering? I have no idea. But make a simple posterized gray
ramp and try conversions of various types with BPC checked on and off
and you will get a rough idea what's going on.
Nick Wheeler
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