Last weekend, a new-to-me Noct-Nikkor 58mm f/1.2 manual focus lens was delivered. This is a grail legacy lens for Nikkor collectors/shooters. It is relatively rare and expensive because of a hand-ground aspherical element in the design that eliminates (mostly) a spherical aberration called coma. Coma occurs at the edges of the image of lenses without correction and expresses small/point light sources as elongated blobs instead of points. The Noct-Nikkor was expressly design to minimize this distortion when shot wide open, such as in night/low-light shots or astrophotography.
I finally found a user-grade lens at a reasonable price. Mine will be used on my Nikon bodies.
I took it with me to supper with my buddy mounted on a Nikon D750. He patiently permitted me a test photo. He also was quite taken with the lens. It was the first of this model he ever handled.
I like the rendering of the portrait.
I am grateful. Life is good.