Orion - 15 6/28mm wide angle rangefinder lens M39 mount USSR

Smecked wide -angle lens with enlightened optics for rangefinder cameras.

Designed on the basis of the optical scheme "Topogon"

In 1959, the lens was awarded a diploma of the II degree of VDNH of the USSR

Focus distance: 28 mm

The angle of field of view: 75 °

Frame size: 24 × 36 mm

Number of lenses/groups: 4/4

Working segment - 28.8 mm

Relative hole: 1: 6

Limits of the diaphragm scale: 1: 6–1: 22

The number of diaphragm petals - 7

Diaphragm adjustment - unavailable

Predance of the diaphragm - absent

The near focus limit - 1 m

Connections:

lens with camera - m39 × 1

for screwing nozzles - m40.5 × 0.5

for worn nozzles - ∅51 mm

Location of fastening for light filters: front

Resolution by TU (Center/Territory): 45/18 lines/mm

Light transmission coefficient: 0.80

Weight - 62