Cosina 50mm f1.8 Cosinon-S - Lens

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Model Details

Manual focus normal lens made for K-mount 35mm SLR cameras introduced by Cosina. Metal body available in black.

  • Cosina 50mm f1.8 Cosinon-S
  • Minimum focus distance: 0.5m
  • Aperture blades: 6
  • Size: 63 x 33 mm
  • Weight: 174g

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Type
SLR / DSLR Lens
Brand
Cosina
System
Pentax K
Usage
FilmDigital
Filter Size
49mm
Field of View
Normal
Focus Type
MF Only

Pentax K

The Pentax K mount was introduced in 1975 and has been Pentax’s primary mount for both film and digital SLRs ever since. It has changed a few times to add new features like automatic aperture control and autofocus, but the bayonets underneath are the same. This means all Pentax K lenses will mount on all K mount bodies, including the newest digital cameras.

Pentax K was also widely used by other manufacturers like Ricoh, Cosina, and Chinon, so there is a wide variety of lenses available for the system. M42 lenses can also be adapted quite easily to work on Pentax K bodies.

One of Pentax's most successful cameras, the Pentax K1000, was instrumental in the success of the system. The K1000 is one of the longest-lived 35mm cameras and was produced from 1976 to 1997. It remains one of the go-to recommendations for photography students.

Note: Pentax K mount lenses made by Ricoh have a special “Ricoh pin”. If you want to use these lenses on autofocus Pentax cameras, the pin must be removed. Otherwise it will become locked to the autofocus shaft and removing the lens may require disassembly.

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Cosina 50mm f1.8 Cosinon-S - Lens Availability & Price History
Date Sold SKU Quality Control Price Image
Available T84162 €25,00 Cosina 50mm f1.8 Cosinon-S
Available T91547 €25,00 Cosina 50mm f1.8 Cosinon-S
04 Mar 2025 T81408 € 25,00 Cosina 50mm f1.8 Cosinon-S - Lens Image
24 Jan 2025 E22574 € 19,00 Cosina 50mm f1.8 Cosinon-S - Lens Image
28 May 2021 A63655 € 17,50 Cosina 50mm f1.8 Cosinon-S - Lens Image