Rokinon 50mm f/1.4 AS IF UMC Minolta A 50M-S

Weight: 535 g
Brand: Rokinon
Description: Mount: Mamiya 645, lens type: standard, focal length: variable, min. focal length: 55 mm, max. focal length: 110 mm, aperture F at min. focal length: 4.50, aperture F at max. focal length
Type: Lens
Functions: Internal focus
Length: 74.7 mm
Diameter: 81.6 mm
Focal length: Permanent
Lens type: Standard
Minimum focus distance: 0.45 m
Focal length of prime lens: 50 mm
Bayonet: Minolta A
Filter thread diameter: 77 mm
Aperture F at max. focal length: 1.4
Aperture F at min. focal length: 1.4
Minimum aperture F: 2
Number of aperture blades: 8
Number of aspherical elements: 2
Number of element groups: 6
Number of elements: 9