N°207241 · Family detail
MamiyaPrime·MAMIYA RB67 mount·1974
Mamiya-SEKOR C 50mm F/4.5
Specifications01
MountMAMIYA RB67
Focal length50mm
Max aperturef/4.5
TypePrime
Release year1974
Weight780 g
Filter size77 mm
Min focus distance0.279 m
Max magnification0.8772
Optical elements11
Groups8
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hood80mm - Clamp-on square
TeleconvertersNot available
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypePrime lens
Summary02
This is a 50mm prime lens for the Mamiya RB67 medium-format system, with a maximum aperture of f/4.5. Suitable for general-purpose and portrait framing on the RB67.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Mamiya RB67 mount has a flange distance of 112 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Most lenses for this mount have a leaf shutter. The adapter must hold the shutter open.
- Sony EAdapter · 94 mm
- Canon RFAdapter · 92 mm
- Nikon ZAdapter · 96 mm
- Fujifilm XAdapter · 94.3 mm
- L-MountAdapter · 92 mm
- Micro Four ThirdsAdapter · 92.75 mm
- Fujifilm G (GFX)Adapter · 85.3 mm
- Canon EF-MAdapter · 94 mm
- Canon EFAdapter · 68 mm
A rear element that sticks out can hit the camera mirror.
- Nikon FAdapter · 65.5 mm
A rear element that sticks out can hit the camera mirror.
Other Mounts03
No alternate mounts are indexed for this family yet.