I haven't had much time until now to try out the new D7100 and my plans of doing some shooting today were most definitely smashed by the snow so i'll post up some of the first proper shots, Wednesday morning.
ISO 400, f5.6, 500mm f4 + 1.4x tele, 1.3x crop mode.
First impressions on the body are that it doesn't feel as "solid" as the D300 series on the end on my 500mm lens, it is a lighter body of course. Not really crazy about the button placement but i'm getting used to it.
Overall quality of shots at 100% resolution is an upgrade, D7100 shots look nicer at higher ISO's.
a bit slower than the D300s but i'm not a rapid-fire shooter anyway so the much smaller buffer on D7100 shouldn't become too much of an issue (i hope).
Seems to acquire focus quicker though, which is nice.
As with all new camera systems, making sure your software is up to date is usually a hassle.
Adobe PS5 can't handle the D7100 RAW files as i found out, i have to convert all files to DNG format to be able to work with them in PS.
I can upgrade to PS6 but that's $, or i can install my copy of Capture NX2 again and open the files that way..
decisions in the near future.