Sorry , this is the first time I use a mailing list and I don't know if this is the right posting procedure. I use XP 32 DispCalGUI 0.3.8.0 +Argyll 1.1.1 +Spyder3 + Dell 2709W Wide Gamut +Nvidia 8800 GTS 512 I understand that calibrating the monitor is setting it in a "standard" way so that Black and White display is OK for non color-managed applications . Colors may be special, especially with Wide Gamut monitors. Now the questions for Photoshop display ONLY : - Assuming 8-bit LUTs in monitor and graphics card, and not-so-bad monitor, is it better to calibrate AND profile, each missing RGB LUT value resulting in 256x256 missing colors or is it better to set monitor as "standard" reset to factory, graphics card LUT linear, and ONLY profile. - What procedure can I use to compare the two versions - what value is representative ? Difference with ICC v2 / ICC v4 ? - I get "Effective LUT entry depth seems to be 12 bits" ; does it mean my graphics card supports 12-bit input ? Any software using this capability ? Thanks for replying - and telling me (or pointing to tutorial) how to "log in" the argyll list ! _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. https://signup.live.com/signup.aspx?id=60969