Sigma AF 20mm f/1.8 EX DG ASPHERICAL RF Minolta A

Weight: 520 g
Brand: Sigma
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: Focusing motor for Nikon F, internal focusing
Length: 89.5 mm
Diameter: 88.6 mm
Focal length: Permanent
Lens type: Wide angle
Max viewing angle: 94.5 deg.min
Minimum focus distance: 0.2 m
Auto focus: There is
Focal length of prime lens: 20 mm
Bayonet: Minolta A
Filter thread diameter: 82 mm
Aperture F at min. focal length: 1.8
Minimum aperture F: 22
Number of aperture blades: 9
Number of aspherical elements: 2
Number of element groups: 11
Number of elements: 13