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
Field Notes02
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 sources
Other Mounts03
No alternate mounts are indexed for this family yet.