Nikon Nikkor 55mm f/1.2 Non-AI
Nikon F3 with mirror and diaphragm prefire

Vignetting = B- @ f/1.2, B- @ f/1.4, B+ @ f/2, A- @ f/2.8, A thereafter
Distortion = none

Aperture Center Corner
f/1.2    D      C
f/1.4    C      C+
f/2      B-     B-
f/2.8    A-     B
f/4      A      B+
f/5.6    A      A-
f/8      A-     A-
f/11     A-     B+
f/16     B      B

Notes: Moderately low contrast images at f/1.2 and f/1.4; moderately high contrast images at f/2, f/11 and f/16; very high contrast images at f/2.8 to f/8.