Hello, For experimenting, I combined two ti3 files (of two different hutchcolor targets), simply grabbing the patch data from one, adding a prefix of a letter to patch namez (so V1 becomez ZV1 for example) and pasting them on the bottom of the others, and updating patch count to match. This yielded much greater delta E but perceptually better profiles I think. I was wondering if there is any reason I should not do this. What I was trying to overcome is channels crossing over each other near highlight/shadows and causing casts/noise Secondly, I tried employing the -r parameter with colprof, but trying any value from 1 to 30, I could not get the delta e to change even one decimal point, does this imply that it does not have any effect? I also tried the -V but that also didn't change delta E (should it?). When I enter -r 0, that changes things, but I don't own a device that has 0.0 percent error :) here are the two ti3 files and the frankenfile if you'd like to take a look. https://www.dropbox.com/s/o6l2qi1uqc1tsty/timTangoFranken.ti3 https://www.dropbox.com/s/dj8ekprg7y4c6jb/timFuji6830_Jun2014.ti3 https://www.dropbox.com/s/jy2j8cw95by7ew1/timKodak6821_Jun2014.ti3 cheers *~d*