Recently I played with DispcalGUI to calibrate and profile a standard iMac 22" display for prepress with my Eye-One Pro. Starting from the corresponding preset and with some slight change I have been able to obtain what appears to be very good result (see attached verify results). Not satisfied, I tried to verify the calibration/profile with a software tool that is specifically intended for such a prepress certification. The overall result is remarkable and the only test failed (not a surprise) was the gray balance. Now I need your help (this list is full of experts and I am sadly not among them) to better understand the differences between the Dispcal verification method and the one resumed in the screenshot. Is it really impossible to achieve better results in terms of "tone values" working only with the VCGT transfer curves? Thanks to Graeme, Florian and all the guys patiently answering questions on this list. FabrizioTitle: Profile Verification | iMac 2010-04-17 130cdm² D5000 min native 2.4 HQ XYZLUT | 2010-04-18 13:33:07