Lens Models

Lens models are any interchangeable lens that has been marketed

Mamiya Sekor 65mm f/4.5

Summary
Manufacturer	Mamiya
Model	Sekor 65mm f/4.5
Mount	Mamiya RB67
Marketed	1970-1974 54 years ago
Optics
Zoom
Focal length	65mm
Aperture	f/4.5-32.0
Elements/Groups	8/8
Diagonal angle of view	68°
Negative size	6×7
Coating	Single coated
Optical diagram	Mamiya Sekor 65mm f/4.5 × Close
Features
Autofocus
Physical
Weight	840g
Filter thread	77.0mm
Misc
Link	https://rb67.helluin.org/lenses/65mm-f4-5/
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