Condition:

The lens is in VERY good condition! Optics are clean, without scratches, without the fungus! 

Description :

Interchangeable ultra-fast lens with coated optics for rangefinder cameras. Equipped with an iris diaphragm.

Renamed Carl Zeiss Sonnar 1.5/50 trophy lens 1). Initially produced under the name ZK (Zonnar Krasnogorsky), then - Jupiter-3.

In 1954, due to the depletion of stocks of captured optical glass 2), it was recalculated for domestic brands. At the same time, the design of the frame was slightly changed, in particular, the diaphragm setting ring was redesigned. Serial production of a modified version began in 1955.

Since 1956, the lens has been produced by the Zagorsk Optical and Mechanical Plant (ZOMZ, Zagorsk, now Sergiev Posad), and since the late 1970s, at the Jupiter plant in Valdai.

Mounting options: with attachment to the camera M39 × 1 / 28.8, with a bayonet connection of the Kyiv-Contax type, it was planned to release it for the Comet camera.

The release by the State Optical Institute (GOI) of a bayonet version of the lens for completing experimental cameras GOI-Leningrad is known.

Focal Length: 50mm (52.54mm)

Relative aperture: 1:1.5

Field of view: 45° (44°50′)

Frame size: 24×36mm

Number of lenses/groups: 7/3

Front top focal length: −43.44 mm

Rear top focal length: 23.61mm

Distance from first to last surface: 38.3mm

Light diameter of the first surface: ∅34.3 mm

Light diameter of the last surface: ∅24.0 mm

Specification resolution (center/edge): 30/14 lines/mm

Light transmittance: 0.8

Type of enlightenment: chemical, single-layer

Aperture scale limits: 1:1.5–1:22

Number of aperture blades: 13

Near Focus Limit:

threaded version - 0.9 m

bayonet version - 1 m

Working segment:

threaded version - 28.8 mm

bayonet version - 31.85 mm

Connections: lens with camera - M39 × 1, Kyiv-Contax mount

for screw-in nozzles - SpM40.5 × 0.5

for slip-on nozzles - ∅42 mm

Filter mount location: front

Dimensions:

lens length with caps:

threaded version - 55 mm

bayonet version - 50 mm

largest frame diameter:

threaded version - ∅48 mm

bayonet version - ∅47 mm

Weight:

threaded version - 160 g

bayonet version - 145 g

Year of development:

original (Zeiss) - 1930

recalculation (KMZ) - 1954

Calculation:

original - Ludwig Bertele

recalculation (KMZ) - M.D. Maltsev

Production: serial

Years of production: from 1948 (KMZ) to the 1980s (Valdai)Shipping: