recently, I decided to go for a second hand D100 to start in the dark side (precisely the one without dark room, actually!). Some of you may remember I posted here asking for help to confirm my decision on a D100 over a D70 (which all of you preferred, by the way). the thing is that I started the process of buying it. It is a process, indeed, since at second hand dSLR's one has to take a lot of care, I am afraid. Now, my question/comment has to do with what I assume is the most important aspect to take into consideration -taking for granted that every part in the camera functions properly. That important aspect is the shutter: how many times has it been fired? With film cameras that was hardly an issue, unless you bought used equipment from pros; the rest of the mortals wouldn't have shot as much as to "kill" the shutter, since film was (is) expensive and one had to limit the shoots. Now the problem at digital is that shooting is free: one photo taken costs as much as one hundred (unless you print them). That makes some non-professionals shoot as crazy (I once read somewhere one amateur having shot 12.000 times in only one weekend!!! ) So the issue comes: may the shutter in the camera you're buying be next to die? and what is the expected life of it? Somewhere I read that amateur bodies (D70, for instance) are expected to last for about 50.000 shots. Semi-pro's (D100, D200) shouldn't be expected to die before 200.000 (Nikon gives these numbers for the D200) -the numbers, by the way, are only expected averages; then your camera may not reach them or easily go even far above them. The comment goes for those who consider buying second hand dSLR's: keep it in mind. And the question, for me, is: does anyone know whether the shutter on the D200 was anyhow upgraded form that in the D100 so that I shouldn't expect the 200.000 shots average life? I didn't find any information on the D100. By the way, this point adds to my posted list of D100-preferred reasons!