N°109915 · Family detail
MamiyaFisheye·MAMIYA RB67 mount
Mamiya-Sekor C 37mm F/4.5 Fisheye
Specifications01
MountMAMIYA RB67
Focal length37mm
Max aperturef/4.5
TypeFisheye · Prime
Weight1240 g
Filter size40.5 mm
Min focus distance0.257 m
Optical elements9
Groups6
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in petal-shaped
TeleconvertersNot available
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeFisheye lens
Summary02
37mm F4.5 fisheye prime lens for the Mamiya RB67 medium-format system. Intended for fisheye ultra-wide effects and creative, highly distorted perspectives.
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.