Graeme, > Yes. "perceptual" maps the source gamut such that it is compressed > to fit within the destination gamut. "saturation" compresses and > expands the source gamut to make it match the destination gamut. Ah. I thought "saturation" either maintained saturation, or increased the saturation. And in the latter case, I thought it increased the saturation globally, and by a given "percentage". I didn't know it would map the extremeties of the source gamut to the extremeties of the destination gamut in that fashion. :) Thanks again. :) Greg.