Jupiter 3 1.5/50mm M39 FED Zorki Leica LTM RangeFinger Lens L39
Replaceable super-fast lens with coated optics for rangefinder cameras.
It is a replica of the Carl Zeiss Sonnar 1.5/50 lens. The first issues even went under the name ZK (Zonnar Krasnogorsky)
Until 1954, Jupiter-3 was assembled from German components received by the USSR as part of reparations. Upon exhaustion of the supply of components, the optical design was recalculated and the lens, with minor changes in design, was produced from domestic materials from 1954
Focal length: 50mm
Field of view angle: 45°
Frame size: 24×36 mm
Number of lenses/groups: 7/3
Working distance - 28.8 mm
Relative opening: 1:1.5
Aperture scale limits: 1:1.5–1:22
Number of aperture blades: 13
Aperture adjustment - stepless
Aperture preset - none
Near focusing limit - 1 m
Connections:
lens with camera - M39×1
for screw-in attachments - M40.5×0.5
for snap-on attachments - ∅42 mm
Mounting location for filters: front
Resolution according to specifications (center/edge): 30/14 lines/mm
Light transmittance: 0.80
Weight - 140 g.