There are two sample photos shot at 3200 ISO with the new Nikon D3 over at the DPReview forums.

It’s not a definitive high ISO test for the D3 and D300, of course, but it is extremely impressive. 3200 ISO on the Nikon D3 is clearly very usable, and gives you equivalent noise to significantly lower ISO settings on some older digital SLR models.

Of course, as one poster over there points out, these were shot in a sports stadium, which has very different lighting conditions than where you would normally need to use high ISO settings:

I think it is also important to realize that stadium lighting is actually relatively bright with shooters usually able to get 1/500th at f2.8 and ISO 1600. Wedding photographers often shoot in lighting that requires 1/40 at f1.4 at ISO 1600 and the difference in noise generated in the two situation can be quite different as well as the need for clean skin in the picture without blotches from noise.

But, of course, the sample shots are still very much worth checking out if you’re at all interested in the D3. And if you’re not, it’s probably best to avoid them, because they might just make you wish your camera could do such low noise levels at 3200 ISO, and then you’re likely to just start crying for no good reason at all…