Jupiter 36B (1969–1991)
A medium format telephoto lens made in Ukraine for Pentacon Six mount cameras.
Overview
The Jupiter-36B is a 250mm f/3.5 medium format lens. It was made at the Ukrainian Arsenal plant, and possibly also at the Vega plant, from 1969 to 1991. It was designed as a telephoto for professional and enthusiast use in medium format systems. It has a Pentacon Six bayonet mount, so it fits cameras such as the Praktisix and Exakta 66. It is a distinct variant within the Jupiter series and should not be confused with the Jupiter-36V.
Specifications
| Focal length | 250mm |
| Aperture | f/3.5 |
| Optical formula | 4 elements, 3 groups |
| Aperture blades | 6 |
| Minimum focus distance | 2m |
Design
The Jupiter-36B carries a Pentacon Six bayonet mount for medium format SLR cameras like the Praktisix and Exakta 66. The optical design is 4 elements in 3 groups, with a six-blade aperture diaphragm.
Context
Production ran from 1969 to 1991, and the Jupiter-36B was part of a long-running Soviet-era lens series made in Ukraine. The Pentacon Six mount put it in a niche corner of medium format photography, aimed at users of 120 film systems who needed high-quality telephoto reach.
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