Black JUPITER-9 85mm f/2 Rangefinder Soviet lens mount M39. A long focal length lens with coated optics for rangefinder cameras. Jupiter-9 implements the Sonnar optical design of the German company Carl Zeiss.
The design and technological documentation of Zeiss went to the USSR as reparations. Field of view angle: 28°. Working distance - 28.8 mm. Aperture scale limits: 1:2-1:22. Number of aperture blades: 15.
Near focusing limit - 1.15 m. Lens with camera - M39×1. For screw-in bits - M49×0.5. Mounting location for filters: front. Resolution according to specifications (center/edge): 30/18 lines/mm.