Sigma 20mm F2 DG DN Contemporary Leica L

Weight: 370 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
Length: 72.4 mm
Diameter: 70 mm
Focal length: Permanent
Lens type: Wide angle
Max viewing angle: 94.3 deg.min
Minimum focus distance: 0.22 m
Auto focus: There is
Focal length of prime lens: 20 mm
Bayonet: Leica L
Filter thread diameter: 62 mm
Aperture F at min. focal length: 2
Minimum aperture F: 22
Number of aperture blades: 9
Number of aspherical elements: 3
Number of element groups: 11
Number of elements: 13