Jupiter-21M 200mm F/4
akaЮПИТЕР-21М 200mm F/4
Medium telephoto prime lens • Film era • Discontinued
- Announced:
- · No data
- Production status:
- ● Discontinued
- Country of design:
- · USSR (Union of Soviet Socialist Republics)
- Original name:
- · ЮПИТЕР-21М 4/200
- · JUPITER-21M 4/200
- Class:
- · Slow full-frame medium telephoto prime lens
- System:
- · Zenit M42 (1965)
Specification
Optical design: | |
35mm full frame | |
200mm | |
F/4 | |
4 elements in 3 groups (Sonnar) | |
M42 [45.5mm] | |
12.3° (35mm full frame) | |
Diaphragm mechanism: | |
Diaphragm type: | Automatic |
Aperture control: | Aperture ring (Manual settings only) |
8 (eight) | |
Focusing: | |
1.80m | |
<No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Focusing ring |
Physical characteristics: | |
980g | |
⌀78×165mm | |
Accessories: | |
Screw-type 58mm | |
Built-in telescopic round | |
<No data> |
Source of data
- Manufacturer's technical data.
Manufacturer description
The photographic lens "Юпитер-21М" is a long-focus lens with a jumping aperture, designed as an interchangeable lens for cameras of the "Зенит" and "Praktica" types, which have a device for automatically closing the aperture when shooting.
The "Юпитер-21М" lens can be used for photographing from long distances, it can be used for photo hunting and shooting architectural details. Shooting can be done on black and white and color film.
The lens has an automated pressure diaphragm controlled by the camera mechanism. It can also be used with other SLR cameras with a frame format of 24x36 mm, М42х1 thread mount, a working distance of 45,50 mm, with or without an automatic device controlling the pressure diaphragm.
The high resolving power of the lens allows you to take close-up images of small details of distant objects. A relatively large speed makes it possible to shoot sports scenes handheld at a shutter speed of 1/250-1/500 second.
Light transmission, no less than: 0,82. Resolving power, lines/mm, no less than: in the center: 50, at the edges: 36.
From the editor
The lens was produced by the Krasnogorsk Mechanical Plant (USSR) and from 1984 also by the Vologda Optical and Mechanical Plant (USSR).
Other medium telephoto prime lenses in the Zenit M42 system
■M42 mount (2) | |||||||||
Telezenitar-M APO 135mm F/2.8 MC akaТЕЛЕЗЕНИТАР-М АПО 135mm F/2.8 МС | A | 5 - 4 | 1.30m | ⌀58 | 1986 ● | ||||
Jupiter-6-2 180mm F/2.8 akaЮПИТЕР-6-2 180mm F/2.8 | P | 5 - 3 | 2.00m | ⌀77 | ● |