>>3614236And 7D also. Thing is that resolution really is pointless on longer range, since you're bringing in so many other factors with reach.
Take tony's infamous lighthouse for example. 5ds r. 50mp 500mm lens, and he'd get same image with 12mp camera on same lens. Haze is so strong that it eats away resolution. Then you have shutter speeds. Crop factor means that you need less glass for same reach, that alone reduces shutter speeds that you need, that is even before you go into stabilization needs.