>I'm talking about the: Sigma 8-16mm; Sigma 50/1.4; Sigma >150/2.8; and the Tamron 17-50/2.8. If money was no object, >apart from the Tamron, there isn't a Nikon variant of what I >have that I'd actually want. > >At 100% mag on your computer monitor, the D7000 is very >revealing. But even here, I think most "issues" >aren't glass related, but operator induced. > >But to reiterate, 100% mag of a 16mp image on a PC monitor >represents a print of enormous size. A size most people will >NEVER print.
Agreed, I have the Sigma 50 and the 150, and the Tokina 11-16 and all 3 perform great on the d7k.
As you noted, pixel peeping at 100% is not generally relevant, even for cameras such as the d90 given not only the size of the print/image and the viewing distance. Few people view prints at the same distance you would look at an image on the computer (which would be much smaller).
I have to say, even pixel peeping on the d7k I have not been concerned. Any problems have been user error for me.