Cannot tell any difference between shots taken with the 200-500 on these two cameras. Clearly what you get is dependent on light direction . White Swans or dark Geese I see no difference. The 200-500 continues to outperform the old Tam 150-600. The keeper rate in technical terms rather than artistic is 90% +.The tamron was so soft it was virtually 100% fail
The difference between D7100 and D7200 is so marginal. I have the D7200 and IQ is often on par with my D600 !!
I'am off to Calumet now for my sensor cleanings, because it is real bad at the moment.
I will try a D7100v 7200 colour test but at present the geese look the same with either camera !!