>> >> Therefore I took the system gamma into account, which is 2.2 on Win32 >> and 2.222 on Unixes > Hi Stefan, why 2.222 on Unix? > According to which standard/specification? I assumed this when reading Charles Poynton's GammaFAQ and some other UNIX resources some time ago: As gamma usually 1/0.45 and 0.45 are assumed (1/0.45 == 2.22222). Maybe that's the reason for this "system gamma" as I named it, that one must take into account and then the 2.20 of Win32 should be 2.222 as well. We'd have to doublecheck with the other profile loaders again - but I'm sure they give slightly different results and we can never find out whether it's 2.20 or 2.22 on Win32 or Linux ... Stefan -- mailto:color@xxxxxxxxx