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OKS 1-50-1 Anastigmat lens f2 50mm LOMO OCT-18 KONVAS KINOR movie camera #760191

Lens OKS1-50-1 (2/50) - aperture six-lens anastigmat. It was made in 1976 on famous LOMO plant. Lens enlightened chemically. The lens is designed for professional filming cameras running on 35-millimeter film with a frame size 16x22 mm.

This lens were produced for the cameras of "Homeland", "Konvas", "Moscow" and others. Because of high throughput, large resolving power of the lens it were used for creating feature films, documentaries, newsreels and other sports movies. Optical components of lens mounted in a special frame. The aperture ring is iris type.

Most of OKS series lenses were intended for 35mm movie cameras, and optics just placed into different cases with different lens mount, include 16mm cameras. Such lenses (mostly long focus from 35 up to 150mm) looks similar for 35mm and 16mm cameras. But I can't be 100% sure that it is true for all lenses, especially for tiny short focus lenses, which can cover 16mm frame size only.

Most of OKS series lenses were intended for 35mm movie cameras, and optics just placed into different cases with different lens mount, include 16mm cameras. Such lenses (mostly long focus from 35 up to 150mm) looks similar for 35mm and 16mm cameras. Back focus is quite short, so it will not reach infinity focus on SLR cameras. But it will work fine on modern hybrid (non-reflex) digital cameras with some modifications.

Basic specifications:
Focal length, mm - 50.34
Relative aperture - 1: 2
Angular field of view, degree - 30
Working distance, mm - 46.46
Front focal length, mm - 17.86
The back focal length, mm - 32.24
Light transmission coefficient - 0.75
The resolving power, lines / mm
in the center - 50
on the edge of the field - 25
Number of lenses - 6
Diameter of the first luminous surface, mm - 25.5
Light diameter of the last surface, mm - 20.7

Condition:
Lens was enough accurately used before and stored in good working conditions.
The lens is without fungus, separations or scratches, but some minor cleaning marks or minor pieces of dust inside can be found, it doesn't make any effect on photos.
Aperture blades shows some oil. Works fine.

OKS 1-50-1 Anastigmat lens f2 50mm Lomo KONVAS KINOR movie camera #760191

$210.99

Only 1 available


Overview

  • Vintage handmade item from the 1970s
  • Ships worldwide from Ukraine
  • Feedback: 33 reviews