N°106662 · Family detail
Mamiya-SekorTelephoto·MAMIYA 645 mount·1975
Mamiya-Sekor C 210mm F/4
Specifications01
MountMAMIYA 645
Focal length210mm
Max aperturef/4
TypeTelephoto · Prime
Release year1975
Weight715 g
Filter size58 mm
Physical length137.2 mm
Min focus distance2.438 m
Max magnification0.1
Aperture blades9
Optical elements5
Groups4
Min aperturef/32
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in telescopic round
TeleconvertersMamiya M645 Teleconverter 2X N→ 420mm F/8
EraFilm era
Production statusDiscontinued
Additional Info02
ModelC
Format645
Series645
Squeezen/a
Lens TypeShort telephoto prime lens
Iris DriveManual
Zoom Driven/a
Focus DriveManual
Iris Blades9
Data Protocoln/a
Focus Zoom Rodn/a
Country Of OriginJapan
Field Notes02
Mamiya-Sekor C is a 210mm f/4 prime lens for the Mamiya 645 medium-format system, intended for telephoto subject framing such as portraits and distant scenes.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.