Mir-20M 20mm F/3.5 MC

akaМИР-20М 20mm F/3.5 МС

Ultra-wide angle prime lens • Digital era • Discontinued

  • Announced:
  • · 1989
  • Production status:
  • ● Discontinued
  • Country of design:
  • · USSR (Union of Soviet Socialist Republics)
  • Original name:
  • · МС МИР-20М 3,5/20
  • · MC MIR-20M 3,5/20
  • Class:
  • · Slow full-frame ultra-wide angle prime lens
  • · Professional model
  • System:
  • · Zenit M42 (1965)

Abbreviations

MC Multi-layer anti-reflection coating is applied to the surfaces of lens elements. This anti-reflection coating increases light transmission, eliminates flare and ghosting, and maintains color consistence among all lens models.

Model history (2)

■Mir-20M 20mm F/3.5
akaМИР-20М 20mm F/3.5		A9 - 80.18m-- 1973 ●
■Mir-20M 20mm F/3.5 MC
akaМИР-20М 20mm F/3.5 МС		A9 - 80.18m-- 1989 ●

Specification

Optical design:
35mm full frame
20mm
F/3.5
9 elements in 8 groups
M42 [45.5mm]
94.5° (35mm full frame)
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings only)
6 (six)
Focusing:
0.18m
<No data>
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
390g
⌀75×55mm
-
-
Accessories:
Removable front filters are not accepted
Rear screw-type 28mm
Built-in petal-shaped
<No data>

Source of data

  • Manufacturer's technical data.

Manufacturer description #1

You have become the owner of an ultra wide-angle lens "МС Мир-20М".

The lens is essential for amateur and professional photographers who dream of creating artistic photographs with an expressive image of form and space. The lens provides good color reproduction and high image quality. It is necessary when photographing architectural ensembles, interiors, landscapes, for filming in museums.

Multi-layer coating on lens elements increases light transmission and eliminates ghosting and flare.

Manufacturer description #2

The "МС Мир-20М" is a compact interchangeable ultra wide-angle lens designed for SLR cameras with M42x1 thread mount, frame size 24x36 mm and working distance of 45.5 mm.

The lens has an automated pressure aperture that closes to a pre-set value when shooting and allows focusing at full aperture. Aperture switch allows you to shoot in manual mode.

An anti-reflective multi-layer coating applied to lens elements increases light transmission and reduces light scattering, which provides particularly favorable image contrast and sharpness, and largely eliminates ghosting, flare and light spots, even when photographing against light and objects with a large difference in brightness.

The lens has good color reproduction.

The lens is equipped with a set of filters to ensure high-quality images under various shooting conditions.

The lens is recommended for shooting on color, black-and-white and infrared films.

From the editor

An improved version of the original Mir-20M with a new barrel made of plastic, which resulted in a reduction in weight and dimensions, and a multi-layer anti-reflective coating, due to which the light transmission coefficient improved from 0.75 to 0.90. In all other respects, this multi-coated lens is no different from the original version.

In 1992, the lens was released in a small batch under the name "МС Мир-20К 3,5/20" and with the Pentax K mount.

Other ultra-wide angle prime lenses in the Zenit M42 system

■M42 mount (3)
Mir-20M 20mm F/3.5
akaМИР-20М 20mm F/3.5		A9 - 80.18m-- 1973 ●
Jupiter-Super-M 20mm F/2.8 MCA10 - 90.25m-- 1998 ●
Mir-47M 20mm F/2.5 MC
akaМИР-47М 20mm F/2.5 МС		A10 - 90.30m-- ●

Lenses with similar focal length

■M42 mount (29)
Asahi Super-Multi-Coated Takumar 20mm F/4.5 [43952]A11 - 100.20m 1971 ●
Asahi Super-Takumar 20mm F/4.5 [43951]A11 - 100.20m 1968 ●
Cosina Wide Angle 20mm F/3.8 MCA9 - 80.20m⌀62 ●
Fuji Photo Film EBC Fujinon-SW 19mm F/3.5A11 - 80.30m⌀72 ●
Hanimex Wide-Auto 21mm F/3.8A9 - ?0.30m⌀72 ●
Mamiya/Sekor SX Auto 21mm F/4A9 - 80.45m⌀58 1974 ●
Norita Kogaku Noritar 17mm F/4A11 - 100.30m⌀72 1972 ●
Panagor Auto Wide Angle 21mm F/4A9 - 70.16m⌀82 ●
Ricoh Rikenon Auto 17mm F/4A11 - 100.30m⌀72 ●
Ricoh Rikenon 21mm F/3.8A9 - 80.30m⌀72 ●
Sigma MF Ultra-Wide 18mm F/2.8 Multi-Coated IIA10 - 90.25m⌀72 1984 ●
Sigma MF Ultra-Wide 18mm F/2.8 Multi-CoatedA11 - 90.25m⌀67 1980 ●
Sigma MF 18mm F/2.8 FiltermaticA12 - 90.23m⌀77 1978 ●
Soligor Wide-Auto 17mm F/3.5 [MC] (s/n 1xxxxxxx)A11 - 80.22m⌀72 ●
Soligor C/D Wide-Auto 20mm F/2.8 MCA9 - 70.20m⌀58 ●
Soligor Wide-Auto 21mm F/3.8 (s/n 1xxxxxxx)A9 - 80.35m⌀72 ●
Zenitar 20mm F/2.8 MC
akaЗЕНИТАР-К 20mm F/2.8 МС
akaЗЕНИТАР-М 20mm F/2.8 МС
akaЗЕНИТАР-Н 20mm F/2.8 МС
akaЗЕНИТАР-С 20mm F/2.8 МС		A10 - 90.25m⌀67 ●
Spiratone Ultra Wideangle 18mm F/3.5 Pluracoat [I]A11 - 80.22m⌀72 1979 ●
Tokina 17mm F/3.5 RMC Type 2
akaSpiratone Ultra Wideangle 17mm F/3.5 Pluracoat
akaTokina SL 17mm F/3.5		A11 - 90.25m⌀67 1980 ●
Tokina Wide-Auto 17mm F/3.5 RMC Type 1A11 - 80.22m⌀72 ●
Tomioka Tominon Auto 21mm F/3.5
akaTomioka Chinon Auto 21mm F/3.5		A9 - 80.30m⌀72 ●
Vivitar Auto Wide-Angle 20mm F/3.8 (s/n 22xxxxxx)A9 - 70.15m⌀82 1969 ●
Vivitar Auto Wide-Angle 17mm F/3.5 (s/n 37xxxxxx)A11 - 80.22m⌀72 1976 ●
Vivitar Wide-Angle 17mm F/3.5 MC (s/n 37xxxxxx)A11 - 90.25m⌀67 ●
Yashica Yashinon-DX 21mm F/3.3M8 - 50.80m⌀55 1967 ●
Yashica Yashinon-DS Auto 20mm F/3.3A11 - 90.30m⌀72 ●
Yashica Yashinon-DS 21mm F/3.3M8 - 50.80m⌀55 ●
Carl Zeiss Jena DDR Flektogon 20mm F/4A10 - 60.16mE77 1963 ●
Carl Zeiss Jena DDR Flektogon 20mm F/2.8 [electric] MCA9 - 80.19mE67 1976 ●
■Interchangeable mount (6)
Sigma[-XQ] MF [Widerama] 18mm F/3.2 [Multi-Coated] [YS]
akaAccura/Sigma 18mm F/3.2
akaSpiratone 18mm F/3.2
akaSpiratone 18mm F/3.5		A12 - 100.17m⌀72 1972 ●
Soligor Wide-Auto 21mm F/3.8 (s/n 1xxxxxx) [T-4]A9 - 80.35m⌀72 1970 ●
Tamron SP 17mm F/3.5 51B [Adaptall-2]A12 - 100.25m-- 1979 ●
Tamron SP 17mm F/3.5 151B [Adaptall-2]A12 - 100.25m-- 1984 ●
Tamron Auto 21mm F/4.5 [Adapt-A-Matic]A8 - 60.25m⌀82 1970 ●
Vivitar Auto Wide-Angle 21mm F/3.8 (s/n 37xxxxxxx) [T-4]A9 - 80.35m⌀72 ●

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