Seller’s note:[Optical] I think it is beautiful for its age. I am an amateur, but it looks like there is no mold. There are fine scratches and dust.
[Aperture] Can be changed by turning the aperture ring and then turning the lower lock ring (?). I don’t know if this is normal behavior or not.
[Focus] Works, but stiff.
Full size available…Full size available
Open F-value … less than 1.5
Focal length 70mm to less than 150mm