I used the D7100 1st for Ospreys this year and the AF blew me away it was so fast and accurate.....are you shooting AFC = Focus only and D9 ?
No way I'd sacrifice visible IQ because it does cost a lot to travel to these places but after traveling to Venice, Munich, Morocco, Yellowstone, Florida:smile:,.... in the last few months I have come to realize that Nikon's new zooms are capable of great IQ and offer a huge improvement in the fun factor.....but maybe it's because I'll soon be 62 and I'm just lazy:smile:
In any event I'm pretty set on my opinion that the D4 is for sports, the D800 for Landscapes and the D7100 for wildlife and the D7100 goes to Vancouver in November for eagles.
It could be sample variation, I had a D7100 for a while and it must have been a bad copy as it was not accurate shooting field sports with my 300 2.8 compared to using my D700...