Relative aperture - 1:3.5
Angle of view(degree) -12
Diaphragm -from 3.5 to 22
Focusing, m: 1.6 to infinite Thread for filters - M62x0.75
Weight - 700gr
Usually comes with adapter for m42 cameras, a complete new end can be fitted by removing the 4 screws of the Nikon bayonet and replacing with the M42 screw threaded end.