Peter Karp wrote: > 1) lcms and Argyll don't seem to allow a paper simulation, when I use > relative or perceptual intent. Is this correct? That would be > interesting when I want to convert a file for softproof purposes.
You get paper simulation using absolute intent. By definition, relative or perceptual force the whites to be pure white between the colorspaces. You can certainly do softproofing in Argyll, lcms and any other general color transformation package. Some programs combine things to make it simpler to use but more difficult to understand. The softproofing transform workflow ideally should be: Incoming imagery profile appropriate for incoming colorspace linked using preferred intent to profile of output medium (ie. printing press) resulting in press file profile of output medium linked using absolute intent to profile of display (ICC V2, not V4 for this to work, since V4 breaks display profiles absolute colorimetric!) resulting in softproofing image. Sometimes people don't want a true softproof result on a display, since the display isn't set to handle the print white point involved. They want a pseudo softproof, where the white point is adapted to the display, but not completely. This is equivalent to linking the output medium profile using absolute to the display profile using relative colorimetric. (ICC V4 display profiles have made this the default behaviour for so called V4 "absolute intent"). Graeme Gill. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
