Zenitar-K 50mm F/1.9 MC

akaЗЕНИТАР-К 50mm F/1.9 МС

Standard prime lens • Film era • Discontinued • Collectible

  • Announced:
  • · 1991
  • Production type:
  • · Small-batch production
  • Availability:
  • ● Sold out
  • Country of design:
  • · USSR (Union of Soviet Socialist Republics)
  • Original name:
  • · МС ЗЕНИТАР-К 1,9/50
  • Class:
  • · Fast full-frame standard prime lens
  • System:
  • · Zenit K (1985)

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
50mm
F/1.9
6 elements in 4 groups (Double Gauss derivative)
Pentax K [45.5mm]
46.8° (35mm full frame)
On Pentax K APS-C [1.53x] cameras:
35mm equivalent focal length:
76.5mm (in terms of field of view)
35mm equivalent speed:
F/2.9 (in terms of depth of field)
Diagonal angle of view:
31.6°
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings only)
6 (six)
Focusing:
0.45m
<No data>
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
250g
⌀64×39mm
Accessories:
Screw-type 52mm
<No data>
<No data>

Source of data

  • Manufacturer's technical data.

From the editor

Extremely rare standard lens for the Zenit-APK. Both were produced by the Krasnogorsk Mechanical Plant (USSR/Russia) in the 1990s. Optically and cosmetically the lens is identical to the screw mount M version.

Light transmission: 0.90. Resolving power in the center of the field is not less than 48mm-1, at the edges of the field not less than 30mm-1.

Other standard prime lenses in the Zenit K system

■Pentax K mount (2)
Helios-77K-4 50mm F/1.8 [MC]
akaГЕЛИОС-77К-4 50mm F/1.8 МС		A6 - 40.45m⌀52 ●
Helios-44K-4 58mm F/2 [MC]
akaГЕЛИОС-44К-4 58mm F/2 МС		A6 - 40.50m⌀52 ●

Lenses with similar focal length

■Pentax K mount (44)
Chinon Auto 50mm F/1.9
akaAgfa Color 50mm F/1.9 Coated
akaRevuenon Auto 50mm F/1.9		A5 - ?0.45m⌀49 ●
Chinon Auto 50mm F/1.4 [Multi-Coated]
akaAgfa Color 50mm F/1.4 Multi-Coated
akaRevuenon Auto 50mm F/1.4 MC		A7 - 60.45m⌀49 1979 ●
Chinon Auto 50mm F/1.7 [Multi-Coated]
akaAgfa Color 50mm F/1.7 Multi-Coated
akaRevuenon Auto 50mm F/1.7 MC		A? - ?0.45m⌀49 1979 ●
Cima Kogaku AM Topcor 55mm F/1.7 [MC]
akaEdixar 55mm F/1.7 MC
akaExaktar 55mm F/1.7 MC		A6 - 40.60m⌀52 1978 ●
Cosina 55mm F/1.2 MC
akaRevuenon 55mm F/1.2 MC		A7 - 60.60m⌀58 ●
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 Auto 55mm F/2.1
akaVivitar Auto 55mm F/2.1		A4 - 40.60m⌀49 ●
Cosina Cosinon-S 50mm F/1.8
akaPetri 50mm F/1.8		A6 - 50.50m⌀49 1981 ●
Cosina Cosinon-S 50mm F/2
akaCasio 50mm F/2
akaMiranda 50mm F/2
akaPetri 50mm F/2
akaPorst Color Reflex Auto 50mm F/2 MC F
akaSoligor 50mm F/2
akaVivitar Auto 50mm F/2		A6 - 50.50m⌀49 1979 ●
Cosina [Auto] Cosinon-S 50mm F/1.7 MC
akaBauer Neovaron 50mm F/1.7 Multicoated
akaPetri 50mm F/1.7 MC
akaPorst Color Reflex Auto 50mm F/1.7 MC F		A6 - 50.50m⌀49 1978 ●
Cosina [Auto] Cosinon-S 50mm F/1.4 MC
akaBauer Neovaron 50mm F/1.4 Multicoated
akaPetri 50mm F/1.4 MC
akaPorst Color Reflex Auto 50mm F/1.4 MC G
akaVivitar Auto 50mm F/1.4 VMC		A7 - 60.50m⌀49 1978 ●
Irix 45mm F/1.4 SLRA11 - 90.40m⌀77 2020 ●
smc Pentax-M 50mm F/1.7A6 - 50.45m⌀49 1977 ●
smc Pentax-A 50mm F/1.2A7 - 60.45m⌀52 1983 ●
smc Pentax-A 50mm F/1.4A7 - 60.45m⌀49 1983 ●
smc Pentax-A 50mm F/1.7A6 - 50.45m⌀49 1983 ●
smc Pentax-A 50mm F/2A5 - 50.45m⌀49 1985 ●
smc Pentax-M 50mm F/1.4A7 - 60.45m⌀49 1977 ●
smc Pentax-M 50mm F/2A5 - 50.45m⌀49 1979 ●
smc Pentax 50mm F/1.2A7 - 60.45m⌀52 1975 ●
smc Pentax 50mm F/1.4A7 - 60.45m⌀52 1975 ●
smc Pentax 55mm F/1.8A6 - 50.45m⌀52 1975 ●
smc Pentax 55mm F/2A6 - 50.45m⌀52 1976 ●
Ricoh XR Rikenon 50mm F/1.4A7 - 60.45m⌀52 1977 ●
Ricoh XR Rikenon 50mm F/1.7 [I]A6 - 50.45m⌀52 1977 ●
Ricoh XR Rikenon 50mm F/2A6 - 50.45m⌀52 1977 ●
Ricoh XR Rikenon 55mm F/1.2A7 - 60.60m⌀58 ●
Ricoh Riconar 55mm F/2.2A4 - 40.80m⌀52 1978 ●
Ricoh Rikenon 50mm F/2A6 - 50.60m⌀52 1982 ●
Ricoh XR Rikenon 55mm F/2.2A4 - 40.80m⌀52 1980 ●
Ricoh XR Rikenon 45mm F/2.8 • Pancake lensA4 - 30.60m⌀52 1994 ●
Ricoh XR Rikenon 50mm F/2 LA6 - 50.60m⌀52 1980 ●
Ricoh XR Rikenon 50mm F/2 SA6 - 50.60m⌀52 1981 ●
Ricoh XR Rikenon 50mm F/1.7 [II]A6 - 50.60m⌀52 1981 ●
Ricoh Rikenon P 55mm F/1.2A7 - 60.60m⌀58 ●
Ricoh Rikenon P 50mm F/1.4A7 - 60.45m⌀52 1985 ●
Ricoh Rikenon P 50mm F/1.7A6 - 50.60m⌀52 1984 ●
Ricoh Rikenon 50mm F/1.7A6 - 50.60m⌀52 1982 ●
Ricoh Rikenon P 50mm F/2A6 - 50.60m⌀52 1984 ●
Volna 50mm F/1.8 MC
akaВОЛНА 50mm F/1.8 МС		A6 - ?0.45m⌀46 1980 ●
Zenitar 50mm F/2 MCA6 - 40.35m⌀46 1995 ●
Vivitar Series 1 55mm F/1.2 VMCA7 - 60.60m⌀58 1984 ●
Porst Color Reflex Auto 55mm F/1.2 MC FA6 - 40.50m⌀55 ●
Carl Zeiss Classic Planar T* 50mm F/1.4 ZE / ZF.2 / ZK / ZSA7 - 60.45mE58 2006 ●
■Interchangeable mount (1)
MS Optics MS-Mode-S 50mm F/1.3 Dualsystem (200 units)M5 - 41.00m⌀49 2006 ●

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