Hello, Javier: ADR allows you to read the current position of the aperture ring of the lens from inside the viewfinder, trough a window that reflects its number in the center, over the "window for the world" of the viewfinder. I'm a Nikoneer newbie, although a long time amateur. Until now, ADR was essential for me, because I always had manual focus lenses and manual or semi-automatic bodies. Now I have a F5 and AF primes and zooms (Thanks Christmas !!!... , oh! oh! oh!). I'm glad F5 has ADR, but I think I'll use it very few times, whem shooting in manual mode. Don't worry too much about this. "IMHO", you missed nothing. It's a jargon that means "in my humble opinion". I also know very little about email jargon, but I don´t worry about that. I never use "IMHO" because, IMHO, all my opinions are humbly proud :-) ... Merry Christmas and good pictures. Mário Jorge
