Re: Profile Editing, now for the practical . . .
Re: Profile Editing, now for the practical . . .
- Subject: Re: Profile Editing, now for the practical . . .
- From: Henrik Holmegaard <email@hidden>
- Date: Mon, 2 Jul 2001 08:35:04 +0200
Darrin wrote:
I then converted back to the 'reference profile, and the blues went
back to red (ONLY WITH PERCEPTUAL RENDERING - NOT RELATIVE COLOR).
CMYK -> Lab Perceptual is designed to get you back where you came
from, as it were decompressing the gamut compression done with Lab ->
CMYK Perceptual. A good deal of work has been done to get that
working as well as at all possible. Use inverse perceptual gamut
mapping, when you want to reseparate a CMYK image, and are sure which
separation profile was used for the Lab -> CMYK trip.
CMYK -> Lab Relative Colorimetric restates the gamut compression of
the Lab -> CMYK Perceptual trip, and is not designed to decompress
the gamut, but to declare the compression for soft proofing and proof
printing.
--
Henrik Holmegaard
TechWrite, Denmark