Hi, TTL = Through The Lens (at least that's what I think it means anyway) Now I see plenty of messages with iTTL, dTTL, E-TTL, A-TTL, etc. Is there a good place to find what all these xTTLs stand for, a short description, and so on? Also, are the major players (in random order: Canon, Nikon, Pentax, Minolta, Olympus, Kodak, etc) consistent with each other regarding all these terms? could it be that Nikon's dTTL is the same as Canon's iTTL for example??? Thanks!