I am using this command to generate an ICM profile for my Epson 4880 printer. colprof -v -qh -no -np -ni -i D50 -o 1931_2 -S AdobeRGB1998.icc -cmd -dpp -kz printerprofilename I started from a 1500+ target and I am using a ColorMunki. I am happy with the result for colors but I have some problems in the dark tones of the images that I print. Using a print test like this: http://www.northlight-images.co.uk/article_pages/black_and_white_test.html In the 21 step wedge I can read only 19, the darkest ones are all the same. The paper is a good paper (FineArtBaryta) and using Epson ABW I get no problems. Please notice that I had the same problem with the ColorMunki software generated profile and with the Epson canned profile. Any suggestion? How can I improve the darker area of the image? Do you have similar problems?