N°188647 · Family detail
MamiyaPortrait·M42 mount·1974
Auto Mamiya/Sekor SX 55mm F/1.8
Specifications01
MountM42
Focal length55mm
Max aperturef/1.8
TypePortrait · Prime
Release year1974
Weight185 g
Filter size52 mm
Min focus distance0.45 m
Aperture blades6
Optical elements6
Groups5
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodScrew-type round
TeleconvertersNot available
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeStandard prime lens
Field Notes02
Mamiya/Sekor SX Auto 55mm f/1.8 is a standard fast prime for M42 screw-mount cameras, suited for general use including portraits and low-light work.
AI-assisted summary — verify against linked sourcesOther Mounts03
No alternate mounts are indexed for this family yet.