Nikon Nikkor 35-70mm f/3.3~4.5 AIS
Nikomat FTN w/ mirror lockup and diaphragm prefire

@ 35mm focal length
Vignetting = C+ @ f/3.3, B @ f/5.6, A- thereafter
Distortion = pronounced barrel

Aperture Center Corner
f/3.3    B-     C+
f/4      B?     B?
f/5.6    B+     B+
f/8      B      B
f/11     B      B
f/16     B      B
f/22     B-     B-

Notes: Moderately high contrast in center and moderately low contrast in corner at f/3.3, contrast undetermined due to overexposure at f/4 and f/5.6, moderately high contrast at f/8, moderately high contrast in center and moderate contrast in corners at f/11 to f/22.

@ 50mm focal length
Vignetting = A- @ f/4, A thereafter
Distortion = none

Aperture Center Corner
f/4      B-     B-
f/5.6    B+     B+
f/8      B+     A-
f/11     B+     B+
f/16     B      B
f/22     B-     B-

Notes: Contrasty at the expense of resolution. Low contrast at f/4,
moderately high contrast in center and moderate contrast in corners at f/5.6, moderately high contrast at f/8 and f/22 in center and corners, high contrast in center and moderately high contrast in corners at f/11 and f/16. f/22~32 not tested.

@ 70mm focal length
Vignetting = B+(?) @ f/4.5, A- @ f/5.6, A thereafter
Distortion = slight waveforming with no tendency

Aperture Center Corner
f/4      B *    C+ *
f/5.6    B      B-
f/8      B+     B+
f/11     B+     B+
f/16     A-     A-
f/22     B-     B+
f/32     B-     B

Notes: * = overexposed (provisional data, no contrast determination). Moderate contrast at f/5.6-8 and f/32, moderately high contrast at f/11 to f/22.