<p>ok guys, I have a D700 absolutley love the camera, i was looking for a backup and I picked up a new d7100, yeah theres a big difference as far as build but I'm not a pro maybe not even a semi-pro but , I know a great camera when I shoot one, the d700 has yet to have a honest upgrade for that camera, the 810 I sure is a great camera, but If Im going to shoot that size of image and have a use for it then I would of bought one, the 610 and the d7100 is basicly the same camera except for the sensor, and Ive read the 7100 is faster and sharper and can hold its own for high iso around f2300 iso, that works for me cause I only shoot stage performance stuff . I will probably Use my d700 for that stuff anyhow. But back to the point I picked up the d7100 just for the fact if I,m shooting a stage performance where the 200mm is quite getting tight enough, I would use the d7100 with the 200mm to get a tighter shot and not waste any bit of the sensor. what do you guys think????</p>