Bokeh at f/1.0 and 2.2.
Interesting, the lens has 11 aperture blades. This is a first for Nikon as far as I can remember. Other Nikkors have 7 or 9.
Even rounded aperture blades start to show a polygonal shape when stopped down far enough, but depending on the geometry of the blades some retain a rounded opening for longer than others. In the pictures at f/2.2 the lens is already closed down over 2 stops - nearly 2 1/2 stops. The Noct is over a stop faster than any other current Nikkor you should expect the polygonal shape to start appearing at correspondingly wider apertures. On the other hand, it has 11 aperture blades, so the shape should be more rounded than lenses with fewer blades, and you would expect the designers to take great care on this feature, especially with this sort of lens.
Feel free to send me you serial number for my Nikon database
Question: the lens appears to have two filter rings, one around the front element, and a larger one on the front rim of the focus ring - I'm guessing the larger has 95mm thread and is for the hood?