MTO-1000AM 1100mm F/10.5
akaМТО-1000 АМ 1100mm F/10.5
Super telephoto prime lens • Film era • Discontinued
- Announced:
- · No data
- Production status:
- ● Discontinued
- Country of design:
- · USSR (Union of Soviet Socialist Republics)
- Original name:
- · МТО-1000 АМ 10,5/1100
- Class:
- · Slow full-frame super telephoto prime lens
- · Mirror/Reflex lens
- System:
- · Zenit M42 (1965)
- · Kiev-17/19/20 (1978)
- · Zenit K (1985)
Model history (2)
| ■MTO-1000A 1100mm F/10.5 [T] akaМТО 1000А 1100mm F/10.5 | -- | 5 - ? | 10.00m | ⌀120 | ● | |
| ■MTO-1000AM 1100mm F/10.5 [T] akaМТО-1000 АМ 1100mm F/10.5 | -- | 5 - ? | 10.00m | ⌀120 | ● | |
Specification
| Optical design: | |
| 35mm full frame | |
| 1100mm | |
| F/10.5 | |
| 5 elements | |
| Interchangeable mount (T) | |
| 2.3° (35mm full frame) | |
| Diaphragm mechanism: | |
Diaphragm type: | Fixed |
Aperture control: | None |
| Focusing: | |
| 10m | |
| <No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Focusing ring |
| Physical characteristics: | |
| 2700g | |
| ⌀138×255mm | |
| Accessories: | |
| Screw-type 120mm | |
| Built-in telescopic round | |
| <No data> |
Source of data
- Manufacturer's technical data.
Manufacturer description
The MTO-1000AM photographic lens is a mirror telephoto lens with coated optical surfaces designed for "Зенит" SLR cameras with a frame format of 24X36 mm.
A large focal length and good image quality allow the lens to be used for outdoor shooting of distant objects, architectural details, for photo hunting, etc.
The optical parts of the lens are mounted in a barrel with a thread for attaching the lens to the camera, a distance ring, a distance scale, two sockets with a 3/8 and 1/4" thread for mounting the lens on a tripod.
The lens accepts screw-in filter attachments. When using the lens on cameras with other working distances, interchangeable adapter rings are used.
The lens is equipped with a retractable lens hood.
To reduce weight, the main parts of the lens barrel are made of magnesium alloy.
***
Technical data
Focal length, mm: 1084±1,5%.
Relative aperture: 1:10,8.
Angle of view: 2,5.
Working distance, mm: with М42Х1 adapter: 45,5±0,1; with М39X1 adapter: 45,2±0,1.
Light transmission: no less than 0,6.
Resolving power (center/edges), lines/mm: 28/18.
Focusing limits, m: from 10 to INF.
Filter thread: М120х1.
Camera thread: М42х1; М39х1.
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
As МТО-1000А, but with a weight reduced to 2.7kg due to the use of a magnesium alloy.
The lens was produced both by the Lytkarino Optical Glass Plant (USSR) and the Krasnogorsk Mechanical Plant (USSR).
The lens was supplied with three 120mm screw-in filters: УФ-1х (UV), ЖЗ-2х (Yellow/Green) and О-2,8х (Orange).
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.
- The lens has an interchangeable mount that is mechanically identical to the T2 interchangeable mount. In the USSR, the following interchangeable mount adapters were produced: "КП-А/42" (T2 - M42x1/45.5), "КП-А/39" (T2 - M39x1/45.2), "КП-А/К" (T2 - Pentax K), "КП-А/Н" (T2 - Nikon F). "КП" is an abbreviation for "Кольцо переходное", which means "Adapter ring".