> If this turns out to be part of the answer, then the next question > would be "how does one generate "optimal" B2A curves ?". Reverse-engineer the best B2A profiles out there. Some profilers generate too heavy curves while others create slightly too light curves. We're talking Perceptual rendering here. Colorimetric, I'm not sure. Roger Breton | Laval, Canada | graxx@xxxxxxxxxxxx http://pages.infinit.net/graxx