Bob Yankle wrote:
You bring up some good points cmc65. I do not shoot BIFs, not by choice, but by lack of bird habitats. What I DO shot is Revolutionary War Reenactments, and some of that action is far removed from the spectators for safety reasons. I'm considering the 7D MK II because of the 1.6 crop factor, faster AF, and faster burst rate (which I use a lot).
Good arguments for the 7DII. The reach and related sensor efficiency (being able to shoot at 300mm and fill the 20.2 MP sensor) would be good. But if you already have the 5D MK III you could come close to filling the frame with the same shot using the 400mm. If that was not enough, you could just mount it on your current 7D.