Объектив МИР-1 37mm F2.8 ( MIR-1 37mm2.8)

Interchangeable wide-angle high-aperture lens. Equipped with iris diaphragm device with it pre-installed. Coated optics. Designed in the GOI in 1954 on the basis of the optical scheme Flektogon 1). Recommended for all types of filming; it was noted that he was especially valuable in filming, requiring high detail image. At the world exhibition in Brussels in 1958 a set of lenses, which included Mir-1, was awarded the highest award — "Grand Prix". In 1959 the lens was awarded the Diploma of II degree ENEA USSR. KMZ camera line ZENIT-4 was produced variant of the lens with Central shutter World-1Z;. In the 1960s, the release of the lens was transferred to ZOMZ (Zagorsk, now Sergiyev Posad), was made Valdai plant "Jupiter", in recent years, a modified version with a thread connection M42×1 was manufactured in Vologda (voms) under the symbol Mir-1B (Vologda). There were also lenses with indexes: "s" — school; "A" with adapter ring; and Mir-1-automatic — with bayonet joining for the mirror cameras of type "Kiev-10 and Kiev-15" ("Arsenal", Kyiv, Ukraine). Data: Focal length: 37 mm (37,38 mm) Relative aperture: 1:2,8 Angular field of view: 60° Frame size: 24×36 mm Number of lenses/groups: 6/5 Front vertex focal distance: -3,49 mm Rear vertex focal length: 37,17 mm The distance from first to last the surface: 52,8 mm Operating part: World-1 — 45.2 mm World-1-automatic — 44,0 mm Mir-1B — 45,5 mm The limits of the scale diaphragms: 1:2,8–1:16 Near limit of focusing: 0.7 m Resolution of TU (center/edge): World-1 — 45/23 lines/mm The transmission coefficient: World-1 — 0,78 Connections: lens with the camera: World-1 — M39×1 World-1-automatic — BNC (f/a Kiev-10) Mir-1B is M42×1 for screw-in attachments: World-1 — SP-M49×0,5 Mir-1B — M49 x 0,75 for snap-in nozzles: ∅51 mm Dimensions: lens length with caps: World-1 — 62 mm Mir-1B — 56 mm the largest diameter of the rim: ∅59 mm Weight: World-1 — 200 g Year of design: 1954 Calculation: D. S. Volosov Construction: no data Production: serial Years of production: end of 1950-ies