N°109651 · Family detail
MamiyaTelephoto·MAMIYA 645 mount·1976
Mamiya-Sekor C 300mm F/5.6
Specifications01
MountMAMIYA 645
Focal length300mm
Max aperturef/5.6
TypeTelephoto · Prime
Release year1976
Weight710 g
Filter size58 mm
Min focus distance4 m
Aperture blades9
Optical elements6
Groups5
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in telescopic round
TeleconvertersMamiya M645 Teleconverter 2X N→ 600mm F/11.2
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeMedium telephoto prime lens
Summary02
Mamiya-Sekor C 300mm f/5.6 is a prime telephoto lens for the Mamiya 645 medium-format system, intended for distant subjects such as sports, wildlife, or portrait compression. Aperture is fixed at f/5.6.
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.