Cosina Cosinon Auto 40mm F/2.5 MC

akaBauer Neovaron 40mm F/2.5 Multicoated

akaPorst Color Reflex Auto 40mm F/2.5 MC

akaVivitar Auto 40mm F/2.5 VMC

Wide-angle prime lens • Film era • Discontinued

Cosina Cosinon Auto 40mm F/2.5 MC

Cosina Cosinon Auto 40mm F/2.5 MC:

Vivitar 40mm F/2.5 Auto VMC:

  • Announced:
  • · 1978
  • Production status:
  • ● Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · COSINON AUTO MC F=2.5 f=40mm
  • Class:
  • · Fast full-frame wide-angle prime lens
  • · Pancake lens
  • System:
  • · Cosina M42 (1968)

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.

Specification

Optical design:
35mm full frame
40mm
F/2.5
5 elements in 4 groups
M42 [45.5mm]
Pentax K [45.5mm]
56.8° (35mm full frame)
On Pentax K APS-C [1.53x] cameras:
35mm equivalent focal length:
61.2mm (in terms of field of view)
35mm equivalent speed:
F/3.8 (in terms of depth of field)
Diagonal angle of view:
38.9°
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings only)
6 (six)
Focusing:
0.60m
<No data>
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
120g (mount not specified)
⌀62×20mm (mount not specified)
Accessories:
Screw-type 49mm
<No data>
<No data>

Source of data

  • Manufacturer's technical data.

From the editor

The following lenses share the same optical design developed by Cosina:

  • COSINON AUTO MC F=2.5 f=40mm
  • BAUER NEOVARON 1:2.5/40mm MULTICOATED - this lens was produced by Cosina in 1978 in a small number (maybe several hundred) of demo units for the Bauer RX1 35mm SLR camera (also made by Cosina), which was never put into mass production
  • PORST COLOR REFLEX MC AUTO 1:2.5/40mm - standard lens for the Porst compact reflex OC
  • Vivitar 40 MM 1:2.5 AUTO VMC

We listed only the most common lenses with this optical design, but there may be others. Most (if not all) of these were most likely produced by Cosina as an ODM (Original Design Manufacturer).

Judging by the old marking format (COSINON AUTO MC F=x.x f=xxmm instead of COSINA MC COSINON-S xxMM 1:x.x) and serial number (78xxxx), production of the lens began in 1978. Since the lens was released during the transition period, it was available not only with the M42 thread mount, but also with the Pentax K bayonet mount.

Other wide-angle prime lenses in the Cosina M42 system

■M42 mount (2)
Cosina Cosinon Auto 28mm F/2.8 [MC]
akaPorst Super Weitwinkel autoN 28mm F/2.8
akaPorst Super-WW Auto 28mm F/2.8 MC G		A8 - 60.40m⌀58 1970 ●
Cosina Cosinon Auto 35mm F/2.8 [MC]A6 - ?0.50m⌀49 ●

Lenses with similar focal length

■M42 mount (69)
Asahi Super-Takumar 35mm F/3.5 [357, 43571]A5 - 40.45m⌀49 1962 ●
Asahi Auto-Takumar 35mm F/2.3 [335, 43350]S6 - 50.45mA65 1959 ●
Asahi Super-Takumar 35mm F/2 [43931]A8 - 70.40m⌀49 1967 ●
Asahi Auto-Takumar 35mm F/3.5 [336, 43360]S5 - 40.45m⌀46 1959 ●
Asahi Super-Takumar 35mm F/2 [368, 43680]A8 - 70.45m⌀67 1963 ●
Asahi Takumar 35mm F/4 [329]M5 - 40.45m⌀46 1957 ●
Asahi Super-Multi-Coated Takumar 35mm F/2 [43932]A8 - 70.40m⌀49 1971 ●
Asahi Super-Multi-Coated Takumar 35mm F/3.5 [43572]A5 - 40.45m⌀49 1971 ●
Chinon 35mm F/2.8 Multi Coated
akaAuto-Alpa 35mm F/2.8 Multi-Coated		A6 - 60.30m⌀52 ●
Cosina Voigtlander Ultron 40mm F/2 Aspherical SLA6 - 50.40m⌀52 2002 ●
Enna Munchen Lithagon 35mm F/3.5 Type 2M4 - 40.50m⌀52 ●
Enna Munchen Lithagon 35mm F/2.8 Type 1P6 - 50.40m⌀52 1955 ●
Enna Munchen Super-Lithagon 35mm F/1.9P9 - 80.30m⌀52 1958 ●
Enna Munchen Lithagon 35mm F/4.5 CP4 - 40.80m⌀52 1953 ●
Enna Munchen Lithagon 35mm F/3.5 C Type 1P4 - 40.40m⌀52 ●
Enna Munchen Super-Lithagon 35mm F/2.5 CP6 - 60.50m⌀52 1956 ●
Enna Munchen Lithagon 35mm F/2.8 Type 2P6 - 50.40m⌀52 ●
Fuji Photo Film [EBC] Fujinon-W 35mm F/2.8A7 - 60.40m⌀49 1970 ●
Fuji Photo Film EBC Fujinon-W 35mm F/1.9A8 - 60.40m⌀49 ●
Fuji Photo Film Fujinon-W 35mm F/3.5A4 - 40.40m⌀49 ●
Hanimex Wide-Auto 35mm F/2.8A6 - ?0.60m⌀49 ●
Mamiya/Sekor Auto 35mm F/2.8A6 - 50.40m⌀49 1966 ●
Mamiya/Sekor SX Auto 35mm F/2.8A7 - 50.40m⌀52 1974 ●
Mamiya-Sekor 35mm F/2.8 for CPA6 - 50.50m⌀52 ●
Meyer-Optik Gorlitz Primagon 35mm F/4.5 [V]P4 - 40.40m⌀49 1955 ●
Meyer-Optik Gorlitz Helioplan 40mm F/4.5 VP4 - 40.50m 1952 ●
Olympus G.Zuiko Auto-W 35mm F/2.8 for FTLA7 - 60.30m⌀49 1970 ●
P. Angenieux Paris 35mm F/2.5 [Retrofocus] Type R1M6 - 5S.VIII 1950 ●
Panagor Auto Wide-Angle 35mm F/2A8 - 60.30m⌀58 ●
Kuribayashi K.C. Petri Orikkor 35mm F/3.5P5 - 50.90m⌀49 1959 ●
Petri C.C Auto 45mm F/2.8A4 - 30.80m⌀49 1976 ●
Ricoh Rikenon Auto 35mm F/2.8A6 - 50.40m⌀49 ●
Ricoh Rikenon Auto 35mm F/2.8 EEA6 - 50.40m⌀52 ●
Sankyo Kohki W-Komura 35mm F/2.5P7 - 50.60m⌀55 ●
Schacht R Travegon 35mm F/3.5A6 - 30.50m ●
Schneider-Kreuznach Isogon 40mm F/4.5M4 - 40.50m⌀49 1951 ●
Schneider-Kreuznach Curtagon 35mm F/2.8 [I]A6 - 50.35mS.VII 1958 ●
Schneider-Kreuznach Curtagon 35mm F/2.8 [II]A6 - 60.30m⌀49 1966 ●
Soligor C/D 35mm F/2 P (s/n 1xxxxxxx)A8 - 70.30m⌀58 1974 ●
Soligor C/D 35mm F/2.8A6 - 50.35m⌀49 ●
Mir-24M 35mm F/2 [MC]
akaМИР-24М 35mm F/2 [МС]		A8 - 70.30m⌀58 1976 ●
Mir-1V 37mm F/2.8
akaМИР-1В 37mm F/2.8		P6 - 50.70m⌀49 1984 ●
Steinheil Munchen Culmigon 35mm F/4.5M4 - 40.50mS.V 1955 ●
Steinheil Munchen Cassaron 40mm F/3.5 VLM3 - 30.60m⌀34 1952 ●
Steinheil Munchen Auto-D-Quinaron 35mm F/2.8A7 - 50.20m⌀49 1966 ●
Steinheil Auto-Culmigon 35mm F/3.5A4 - 40.80m⌀49 1966 ●
Steinheil Culmigon 35mm F/3.5 BVP4 - 40.80m⌀49 ●
Steinheil Munchen Auto-D-Quinaron 35mm F/2.8 for Edixa-MATA7 - 50.20m⌀49 ●
Tokina 35mm F/2.8 RMC
akaTokina SL 35mm F/2.8		A6 - 50.35m⌀52 ●
Vivitar Auto Wide-Angle 35mm F/2.8 [I] (s/n 22xxxxxx)A6 - 50.45m⌀52 1969 ●
Vivitar Auto Wide-Angle 35mm F/1.9 (s/n 28xxxxxx)A8 - 60.30m⌀55 1973 ●
Vivitar Auto 35mm F/2.8 "Chrome Nose"A6 - 50.30m⌀52 1967 ●
Vivitar Auto Wide Angle 35mm F/2.8 "Bright Band" (s/n 22xxxxxx)A6 - 50.30m⌀52 1968 ●
Vivitar Auto Wide-Angle 35mm F/2.8 [II] (s/n 37xxxxxx)A6 - 50.40m⌀52 ●
Yashica Yashinon-DX Auto 35mm F/2.8A6 - 50.40m⌀52 ●
Yashica Super Yashinon-DX 35mm F/2.8P6 - 50.45m⌀52 ●
Yashica Yashinon-DS Auto 35mm F/2.8A6 - 50.30m⌀52 ●
Yashica Yashinon DS-M Auto 35mm F/2.8A7 - 60.30m⌀52 ●
Yashica Yashikor Auto 35mm F/2.8A6 - 50.60m ●
Yashica Super Yashinon-R 35mm F/2.8P? - ?1.00m⌀46 1961 ●
Monolens Achromat 35mm F/2.8 Iris Soft SLRM2 - 10.50m⌀43 2019 ●
Carl Zeiss Classic Distagon T* 35mm F/2 ZE / ZF / ZF.2 / ZK / ZSA9 - 70.30mE58 2006 ●
Carl Zeiss Skoparex 35mm F/3.4A6 - 50.30mB50 1968 ●
Carl Zeiss Distagon [HFT] 35mm F/2.8
akaRollei-HFT Distagon 35mm F/2.8
akaVoigtlander Color-Skoparex 35mm F/2.8		A5 - 50.40mE49 1970 ●
Carl Zeiss Jena DDR Flektogon 35mm F/2.4 [electric] MCA6 - 60.19mE49 1975 ●
Carl Zeiss Jena DDR Tessar 40mm F/4.5 T Type 1M4 - 30.60mE30.5 ●
Carl Zeiss Jena DDR Tessar 40mm F/4.5 [T] Type 2M4 - 30.40mE49 ●
Carl Zeiss Jena DDR Flektogon 35mm F/2.8 Type 1P6 - 50.36mE49 1953 ●
Carl Zeiss Jena DDR Flektogon 35mm F/2.8 Type 4A6 - 50.18mE49 1961 ●
■Pentax K mount (29)
Chinon Auto 35mm F/2.8 Multi-Coated
akaAgfa Color 35mm F/2.8 Multi-Coated		A5 - 50.30m⌀49 1979 ●
Cosina Voigtlander Ultron 40mm F/2 Aspherical SL II • Pancake lensA6 - 50.38m⌀52 2007 ●
Cosina Voigtlander Ultron 40mm F/2 Aspherical SLA6 - 50.40m⌀52 2002 ●
Cosina Cosinon Auto 45mm F/2.8 MC
akaAuto Chinon 45mm F/2.8
akaRevuenon Auto 45mm F/2.8		A? - ?0.60m⌀49 1979 ●
Cosina Cosinon-W 35mm F/2.8 MC
akaPetri 35mm F/2.8 MC
akaVivitar Auto 35mm F/2.8 VMC		A5 - 50.40m⌀49 1981 ●
Irix 45mm F/1.4 SLRA11 - 90.40m⌀77 2020 ●
Lensbaby Sol 45mm F/3.5 SLR--3 - 2⌀46 2018 ●
Lensbaby Burnside 35mm F/2.8 SLRM6 - 4⌀62 2018 ●
smc Pentax-A 35mm F/2A7 - 70.30m⌀49 1983 ●
smc Pentax-A 35mm F/2.8A6 - 60.30m⌀49 1983 ●
smc Pentax-M 35mm F/2A7 - 70.30m⌀49 1977 ●
smc Pentax-M 35mm F/2.8A6 - 60.30m⌀49 1977 ●
smc Pentax-M 40mm F/2.8 • Pancake lensA5 - 40.60m⌀49 1976 ●
smc Pentax 35mm F/2A8 - 70.35m⌀52 1975 ●
smc Pentax 35mm F/3.5A5 - 40.35m⌀52 1975 ●
Ricoh XR Rikenon 35mm F/2.8 [II]A6 - 60.35m⌀52 1980 ●
Ricoh XR Rikenon 45mm F/2.8 • Pancake lensA4 - 30.60m⌀52 1994 ●
Ricoh XR Rikenon 35mm F/2.8 [I]A6 - 60.30m⌀52 1977 ●
Ricoh Rikenon P 35mm F/2.8A6 - 60.35m⌀52 1984 ●
Soligor C/D 35mm F/2 P (s/n 1xxxxxxx)A8 - 70.30m⌀58 1974 ●
Soligor C/D 35mm F/2.8A6 - 50.35m⌀49 ●
Tokina 35mm F/2.8 RMC
akaTokina SL 35mm F/2.8		A6 - 50.35m⌀52 ●
Vivitar Auto Wide-Angle 35mm F/2.8 [I] (s/n 22xxxxxx)A6 - 50.45m⌀52 1969 ●
Vivitar Auto Wide-Angle 35mm F/1.9 (s/n 28xxxxxx)A8 - 60.30m⌀55 1973 ●
Vivitar Auto Wide-Angle 35mm F/2.8 [II] (s/n 37xxxxxx)A6 - 50.40m⌀52 ●
Kerlee 35mm F/1.2 SLRM11 - 100.30m⌀72 2016 ●
Monolens Achromat 35mm F/2.8 Iris Soft SLRM2 - 10.50m⌀43 2019 ●
Carl Zeiss Classic Distagon T* 35mm F/2 ZE / ZF / ZF.2 / ZK / ZSA9 - 70.30mE58 2006 ●
Zhongyi Mitakon Creator 35mm F/2 SLR
akaOshiro 35mm F/2 SLR		M7 - 50.25m⌀55 2014 ●
■Pentax K mount (1) · APS-C
Zhongyi Mitakon 35mm F/1.9 SLRM8 - 80.20m⌀49 2012 ●
■Interchangeable mount (19)
Hanimex Wide Angle 35mm F/2.8 [T]P6 - ?0.60m⌀49 ●
Hanimex Wide 35mm F/3.5 [T]P6 - ?0.60m⌀52 ●
Kenko 35mm F/4 Soft MC [T]M5 - 50.30m⌀52 1996 ●
Kenko 45mm F/4.5 Soft MC [T]M2 - 10.35m⌀52 1995 ●
Sankyo Kohki W-Komura 35mm F/2.5 [Unidapter]P7 - 50.60m⌀55 ●
Sankyo Kohki W-Komura 35mm F/2.5 [Unidapter Auto]A7 - ?0.50m⌀55 ●
Komuranon 35mm F/2.5 K·M·CA7 - 50.50m⌀58 1974 ●
Sigma[-XQ] MF 35mm F/2.8 Multi-Coated [Flash Auto] [YS]A6 - 50.50m⌀52 1975 ●
Soligor Wide-Auto 35mm F/2.8 (s/n 1xxxxxxx) [T-4]A6 - 50.40m⌀49 ●
Soligor 35mm F/3.5 [T]P6 - 53 ft.⌀46 ●
Soligor 35mm F/2.8 [T]P6 - 50.50m⌀49 ●
Mir-1A 37mm F/2.8 [T]P6 - 50.24m⌀52 1972 ●
Tamron Auto 35mm F/2.8 [Adapt-A-Matic]A6 - 50.30m⌀55 1969 ●
Tamron 35mm F/2.8 [T]
akaSoligor 35mm F/2.8		P6 - 50.90m 1961 ●
Vivitar Wide Angle 35mm F/3.5 [T]P5 - 50.90m⌀46 ●
Vivitar Wide-Angle 35mm F/2.8 [T]P6 - 50.90m⌀52 ●
Vivitar Auto Wide-Angle 35mm F/2.8 (s/n 37xxxxxxx) [T-4]A6 - 50.45m⌀49 1968 ●
Vivitar Auto Wide-Angle 35mm F/2.5 (s/n 37xxxxxx) [TX]A7 - 70.28m⌀58 1976 ●
Hanimar 35mm F/3.5 [T]P6 - ?0.90m⌀52 ●

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