N°175499 · Family detail
MamiyaPrime·MAMIYA 645 mount·1975
Mamiya-Sekor C 55mm F/2.8
Specifications01
MountMAMIYA 645
Focal length55mm
Max aperturef/2.8
TypePrime
Release year1975
Weight395 g
Filter size58 mm
Min focus distance0.55 m
Aperture blades6
Optical elements9
Groups6
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodScrew-type round
TeleconvertersNot compatible
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeWide-angle prime lens
Summary02
Mamiya-Sekor C is a 55mm prime lens for the Mamiya 645 medium-format system, with a maximum aperture of f/2.8 for general use and low-light capability. Use with standard focal-length applications like portraits and everyday shooting.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Mamiya 645 mount has a flange distance of 63.3 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Sony EAdapter · 45.3 mm
- Canon RFAdapter · 43.3 mm
- Nikon ZAdapter · 47.3 mm
- Fujifilm XAdapter · 45.6 mm
- L-MountAdapter · 43.3 mm
- Micro Four ThirdsAdapter · 44.05 mm
- Fujifilm G (GFX)Adapter · 36.6 mm
- Canon EF-MAdapter · 45.3 mm
- Canon EFAdapter · 19.3 mm
A rear element that sticks out can hit the camera mirror.
- Nikon FAdapter · 16.8 mm
A rear element that sticks out can hit the camera mirror.
Other Mounts03
No alternate mounts are indexed for this family yet.