Greetings all, I've been doing a great deal of reading and research on various tv technologies, but am finding it difficult to find very specific information regarding calibration. My query is to what equipment is used for such a service? I know there are calibration DVD's out there that allow for basic calibration, but I'm interested in finding out about the internal calibration that I feel should be done to most serious home theater systems. ISF states they sell an "optical comparator", but isn't clear on the other equipment that may be needed. I suppose you could sum up what I'm seeking by asking "what equipment is needed, and what does each do?" I've also looked into DisplayMate, though its aimed more towards computer monitors, it seems functional for video. Is this an example of a calibration program that is also required with the professional equipment? I'm mostly interested in the calibration of DLP and LCoS. If anyone can help in my understanding of this, I'd surely appreciate it.