N°357471 · Family detail
Mamiya-SekorPrime·MAMIYA 645 mount
Mamiya-Sekor C Shift 50mm F/4
Specifications01
MountMAMIYA 645
Focal length50mm
Max aperturef/4
TypePrime
Weight735 g
Filter size77 mm
Physical length106.7 mm
Min focus distance0.457 m
Max magnification0.1799
Aperture blades6
Optical elements10
Groups8
Min aperturef/32
AutofocusNo
StabilizationNo
Aperture controlAperture ring
Lens hoodNot required
TeleconvertersMamiya M645 Teleconverter 2X N→ 100mm F/8
EraFilm era
Production statusDiscontinued
Additional Info02
ModelC Shift
Format645
Series645
Squeezen/a
Lens TypeShift lens
Iris DriveManual
Zoom Driven/a
Focus DriveManual
Iris Blades6
Data Protocoln/a
Focus Zoom Rodn/a
Country Of OriginJapan
Summary02
50mm tilt-shift prime lens for the Mamiya 645 medium-format system, with a fixed f/4 maximum aperture. Designed for perspective control and close-range architectural or studio use.
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.