I dont know where I should make this post so moderator feel free to move it to the right location. Saturday I was using my D200 at a local car show when it freakied out on me. First it wouldnt focus, then i noticed the f stop was on f/0 (it would still take a pic but it was completely black) then battery indicator started flashing like the battery was dead. I turned the camera off and back on again. The battery indicator never flashed again but it did go to f/0 a few times. Ive never had this problem. The obly thing that Ive done differently since the last time I used it was changed the memory card to a 16GB. Could that be a problem? If not has anybody else ran into this before?