I shot this photo at an outdoor wedding reception last weekend with the D3. It was around 11 at night so it was virtually in the dark. 85mm, f/4.5 at 1/20 with a slow 24-85mm 4.5 at ISO 6400! You can see some noise but i think it would make an acceptable 8x10 print. This is amazing performance - it's like getting another 4 stops of light to work with.