Lens mount: M 39

Focal length: 50mm

Relative aperture: 1: 2

Scale of diaphragms: from 2 to 22

Diaphragm: Manual

apertures F / 22,16, 11, 8, 5,6  4  2,8  2

Petals diafragm - 9 

Focusing range: from 1m to infinity