N°354058 · Family detail
Mamiya-SekorFisheye·MAMIYA 645 mount
Mamiya-Sekor C ULD Fisheye 24mm F/4
Specifications01
MountMAMIYA 645
Focal length24mm
Max aperturef/4
TypeFisheye · Wide · Prime
Weight785 g
Physical length81.3 mm
Min focus distance0.305 m
Max magnification0.1401
Aperture blades5
Optical elements10
Groups8
Min aperturef/22
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in petal-shaped
TeleconvertersNot compatible
EraFilm era
Production statusDiscontinued
Additional Info02
ModelC ULD Fisheye
Format645
Series645
Squeezen/a
Lens TypeFisheye lens
Iris DriveManual
Zoom Driven/a
Focus DriveManual
Iris Blades5
Data Protocoln/a
Focus Zoom Rodn/a
Country Of OriginJapan
Field Notes02
Mamiya-Sekor C ULD 24mm F/4 fisheye lens for the Mamiya 645 system. Fixed focal length fisheye design intended for dramatic wide-angle effects and creative distortion.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.