Canon FD 35-105mm f/3.5

@ 35mm setting Vignetting = C+ @ f/3.5, B+ @ f/5.6  Distortion = pronounced barrel 
Aperture Center Corner 
f/3.5    B-     C+ 
f/5.6    B      B- 
f/8      B+     B 
f/11     B+     B 
f/16     B      B+
f/22     B-     B- 
Note: moderate contrast.

@ 50mm setting Vignetting = B- @ f/3.5 Distortion = slight pincushion 
Aperture Center Corner 
f/3.5    B      B- 
f/5.6    B      B 
f/8      A-     A 
f/11     A-     A- 
f/16     B+     B+ 
f/22     B      B- 
Note: moderate contrast

@ 85mm setting Vignetting = C+ @ f/3.5, B @ f/5.6 and beyond Distortion = slight barrel 
Aperture Center Corner 
f/3.5    C      C+ 
f/5.6    B      B
f/8      A-     B+ 
f/11     A-     B+ 
f/16     B+     B+ 
f/22     B      B- 
Note: moderate contrast.

@ 105mm setting Vignetting = B- @ f/3.5, A- @ f/5.6 Distortion = pronounced barrel 
Aperture Center Corner 
f/3.5    B      B 
f/5.6    A-     B+
f/8      A      B 
f/11     A-     B+ 
f/16     B+     B+ 
f/22     B-     B- 
Note: moderately high contrast.