The D7000's resolution showed a significant improvement over the D90 on our test chart, clocking in 1800 x 2200 LPH while the D90 had a result of 1400 x 1800 LPH (higher is better as that means the camera is able to capture finer detail). Compared to the D90, ISO performance is also much improved, even at ISO 1600 images stay noise-free. Only from ISO 3,200 (which by the way is the highest setting on the D90) did we notice the presence of "noise" in the images. In a nutshell, the D7000's high ISO performance is the best we've seen in a long while for an APS-C DSLR.
The D7000 manages to strike a balance between image noise and clarity up to ISO 5000, with images that are usable after some noise reduction in post-production. From ISO 5000 onwards, we found image noise starting to interfere with image detail. Unless it's absolutely critical for you to get that shot, we don't recommend shooting at ISO 6400 and above. Still, that's a lot of latitude for someone to work with.
The D7000 introduces full HD video recording, but at limited frame-rates. Continuous auto-focus is built-in, as is a face detection AF mode, both of which should please holiday shooters. Professionals looking for more control and to avoid the whirring sound of a lens auto-focusing will find the stereo microphone jack useful, but we think the limited frame-rates may deter serious shooters.