Focal length - mm 52 Geometrical relative aperture 1:2
Corner of a field of vision: 45 ° The size of a shot: 24x36 mm
Quantity of lenses/groups: 6/3 Forward topmost focal length: −49,60 mm
Back topmost focal length: 27,75 mm Distance from the first to last surface: 31,74 mm
Light diameter of the first surface: Ø29,0 mm Light diameter of last surface: Ø22,0 mm
Resolution (0мм/10 mm mm/20): 39/29/24 lines/mm Resolution on THAT (centre/field): 30/14 lines/mm
Enlightenment type: chemical, single-layered Limits of a scale of diaphragms: 1:2 - 1:22
Near limit of focusing: 1 m Working distance: 28,8 mm
Lens with the camera thread : M39x1 Weight: 130 gr
In good condition, works aperture throughout the range, the lenses are clean without fungus or dust. No scratches, but few clearning marks. Focusing Ring rotates smoothly . Outer cage has light traces and wear of usage , but it is in perfect condition for 1959 item - look pictures - it is actual. The diaphragm blades are clean.