I recently parted ways with my Leica Noctilux, a very fine lens. As an alternative, I ended up grabbing a Nikon Noct to see how it performed on the D3.
As background, I need to say that I really like shooting with a narrow field of focus. And, manual focus isn't much of an issue as I've had plenty of practice with the M8 and DMR. It's more of a personal style. So, I was very interested to see how the Noct performs as there aren't too many images that I could find with the D3 and the Noct.
After two weeks, I have to admit is has become my favorite lens to use on the D3. You can really tell that the lens uses a hand-polished aspheric element, as the colors, contrast and sharpness jump right out at you. It's not summilux 50/1.4 asph sharp, but plenty sharp enough for my taste.
What's really impressed me is the bokeh. It's buttery smooth.
Here are a few images from a variety of situations.