> About the black generation / TAC: The examples you posted -were they generated > before or after calculating a profile? I roughly tested the -kp settings with xicclu and then created the profile with -qh. The curves I posted come from the profile. > My "old" way of testing the separation > quality of a profile is simply in generating a Lab-ramp (from 0 0 0 to 100 0 > 0) and converting using perceptual ri. This what you see in your separations > responds almost exactly to what you will get running xicclu -v -g -fb -ip > profile.icc Argyll also offers a few excellent images of testing profile > conversions. Thanks for the suggestions. Have you ever tried comparing Photoshop and cctiff conversion with Argyll created profile? Fabrizio