Mon 24-Jun-13 10:25 AM | edited Mon 24-Jun-13 10:49 AM by richardd300
An interesting thread as I have a D7100 and sold my D7000 to fund it. The D7100 to me is the best DX I've ever had. I use the D7100 for wildlife and for this reason alone the removal of the AA filter IMO makes the D7100 stand out from the D7000. In addition and I know there are those who will say it's a gimmick, the x1.3 crop on the D7100 helps me with my wildlife techniques. Also, the ability to crop a greater area because of the pixels available is an added bonus. I have used it for landscape albeit rarely and similarly the results are extremely good and in my view an improvement on the D7000.
As for high ISO noise, I don't find it a problem up to ISO800 and even if my cropping is minimal up to ISO1600 gives satisfactory results. In comparison to the D7000 I find ISO noise at similar settings about the same.
Finally and as has been mentioned, as sensors increase in pixel size, some older lenses will start to show lower capability with regards to IQ. In my case the differences are not an issue as nearly all my lenses are either pro grade or recent editions. Even my 3rd Party lenses, the Sigma 50-500mm OS and 105mm OS macro give excellent results. Certainly your 80-400mm VR will work well and you shouldn't only notice much of a difference, however you must prepare whether you choose the D7000 or D7100 to change your shooting techniques.