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Bill, The concept of 'proofing lights' is that these lights are set to an accepted 'world wide standard', for the proper viewing evaluation of prints. That way when you look at a specific color (lets say blue), you are using the same point of reference as the rest of the world. (So you are comparing 'apples' and apples') For example: If you do 2 prints of the same file and send one to a 'client'. If you both have the same viewing light, and the client says the print is too red, you know that you ar looking at the same colors. If the client was looking at the identical print, but under incandescent light, it *would* be more red, but it would be because it wasn't industry standard view light, not because you printed it incorrectly. Does this make sense? The only place 'profiles' come into this equation is when one is evaluating the results from a profile. The only 'objective/standardized' way of evaluating the colors, is under the industry standard light. Hope this helps and does not confuse you further. Harvey Ferdschneider partner, SKID Photography, NYC > Maybe this is another of those relative newbie questions, but here goes: > > The thread on Ott lights and similar illumination sources for prints has > been very interesting to me. For quite some time a friend has been trying > to convince me to buy an Ott light to use when I create my printer > profiles. I've never done that because (except for a while, when I used > pigment inks) I've been very happy with the profiles I've made, and haven't > recognized problems. > > I'm more than a little confused by parts of the Ott light thread. Are > people using these lamps to assist with creation of printer profiles, or to > assist with monitor profiling, or both? The talk of "reflectors" and black > boxes has also left me behind. > > Can someone point me to a source of info which would bring me up to speed? > > Bill Hansen - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.