#1. "RE: Default Colour Space ?" In response to Reply # 0 Fri 06-May-11 08:15 PM by Robp
Color Spaces should ONLY be assigned to their intended device, as follows:
Display Space -- Use your monitor's ICC Profile such as that assigned by your computer or monitor's manufacturer, or, better, the profile produced by your monitor-calibrator like a Spyder 3 Pro or ColorMunki. A calibrator will (should) automatically assign it's produced ICC profile to your monitor.
Working Space -- Use an RGB Profile such as sRGB, aRGB or ProPhoto RGB which you can designate in your post-processor's (CNX2, CS5, etc.) Preferences file. LR3 uses a modified version of ProPhoto RGB by default.
Printer Space -- Use a specific Printer/Ink/Paper profile like the Epson Fine Art paper ICC Profile if that's what you are using; otherwise, use the profile suggested by your printer manufacturer which is often sRGB.
Web Space -- Usually uses sRGB. Check the web site for possible commentary.
Special circumstances may dictate use of other color spaces, like CMYK, but, if you are dealing with more esoteric situations, you'll likely know plenty about Color Spaces.