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