Re: LAB values
Re: LAB values
- Subject: Re: LAB values
- From: Chris Murphy <email@hidden>
- Date: Fri, 1 Aug 2003 23:39:23 -0600
On Friday, August 1, 2003, at 11:00 PM, "Peter Baumbach"
<email@hidden> wrote:
When I followed the input profile evaluating procedure outlined in Real
World Color Management pp. 224-233 the LAB values of the simulated
scanning
result in ColorLab (RGB values built by hand, capture profile
assigned, then
converted to LAB with absolute colorimetric as rendering intent) and
the LAB
values of the real scanned tiff file with the capture profile assigned
in
Photoshop differ.
I don't understand why ?
The info palette's LAB values for RGB and CMYK documents by default is
based on relative colorimetric. Go into Color Settings, click the
Advanced checkbox, and change the Intent to Absolute Colorimetric. Make
sure you change it back before doing any mode changes (other than with
Convert to Profile), or try to trust Print With Preview's preview box.
Chris Murphy
Color Remedies (TM)
www.colorremedies.com/realworldcolor
---------------------------------------------------------
Co-author "Real World Color Management"
Published by PeachPit Press (ISBN 0-201-77340-6)
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