Re: What rendering intent
Re: What rendering intent
- Subject: Re: What rendering intent
- From: Henrik Holmegaard <email@hidden>
- Date: Thu, 7 Feb 2002 04:49:35 +0100
Once an image has been produced, and users wish to
simulate the output on another device, the Relative Colorimetric intent
should be used to accurately replicate the specific content of the original
print. In such a case, the original image has already been transformed into
a smaller colorspace and should not suffer from breaks in tonal quality when
transformed into the proofing colorspace.
Caveat -
When reseparating high lightness range CMYK (e.g. glossy offset,
inkjet) into low lightness range CMYK (e.g. newsprint, uncoated
offset), user Perceptual in applications that do not support Black
Point Compensation and use Relative Colorimetric with Black Point
Compensation in applications that do. Using Relative Colorimetric
pure and simple will clip colors from L* 10 to L* 30 available in the
source CMYK space.
Perceptual is by definition white point and black point relative.
Relative Colorimetric is by definition white point relative and black
point absolute.
The Adobe CMM in some but not in all Adobe applications supports
non-standard processing. I am not saying this is good or bad, but
only that you need to know what you are doing to get the same results
from applications which all are ICC compatible.
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