MTO-500 500mm F/8
akaМТО-500 500mm F/8 [П]
Super telephoto prime lens • Film era • Discontinued
- Announced:
- · 1956
- Production status:
- ● Discontinued
- Country of design:
- · USSR (Union of Soviet Socialist Republics)
- Original name:
- · МТО 1:8 F=50см П
- · МТО 8/500
- Class:
- · Slow full-frame super telephoto prime lens
- · Mirror/Reflex lens
- System:
- · Zenit M39 (1952)
Specification
| Optical design: | |
| 35mm full frame | |
| 500mm | |
| F/8 | |
| 4 elements in 3 groups | |
| M39 [45.2mm] | |
| 5° (35mm full frame) | |
| Diaphragm mechanism: | |
Diaphragm type: | Fixed |
Aperture control: | None |
| Focusing: | |
| 4m | |
| <No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Focusing ring |
| Physical characteristics: | |
| 1500g | |
| ⌀100×165mm | |
| Accessories: | |
| Screw-type 77mm | |
| <No data> | |
| <No data> |
Source of data
- Manufacturer's technical data.
Typical characteristics of mirror (reflex) lenses
- Catadioptric system consisting of curved mirrors and optical glass;
- Much shorter, lighter and less expensive designs than conventional super telephoto lenses;
- Outstanding correction of chromatic aberrations;
- Since the aperture is fixed, neutral density filters are used to obtain a smaller aperture;
- Doughnut-shaped out-of-focus highlights.
From the editor
Accessory super telephoto lens for Зенит 35mm SLR cameras with the M39 screw mount. The lens was produced both by the Krasnogorsk Mechanical Plant (USSR) and Lytkarino Optical Glass Plant (USSR). Originally the lens was produced under the name "МТО 1:8 F=50см П", where "П" means "[single] coated". At some point the name was simplified to just "МТО 8/500".
Light transmission: 0.50. Resolving power, lines/mm: at the center of the field: 35, at the edges of the field: 22.
Notes
- "МТО" is an abbreviation for "Максутова ТелеОбъектив", which means "Maksutov's Telephoto lens", or "Менисковый ТелеОбъектив", which means "Meniscus Telephoto lens".
- Dmitry Dmitrievich Maksutov (1896-1964) is a Soviet scientist, optician, corresponding member of the USSR Academy of Sciences (1946). Inventor of the meniscus optical system bearing his name, which is now widely used in telescope construction.
Other super telephoto prime lenses in the Zenit M39 system
| ■M39 mount (1) | |||||||||
| MTO-1000 1000mm F/10 akaМТО-1000 1000mm F/10 [П] | -- | 5 - 4 | 10.00m | ⌀120 | 1956 ● | ||||