Sigma AF 50mm f/2.8 EX DG MACRO Canon EF

Weight: 320 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, macro mode
Length: 66.5 mm
Diameter: 71.4 mm
Focal length: Permanent
Lens type: Macro lens
Max viewing angle: 46.8 deg.min
Minimum focus distance: 0.189 m
Auto focus: There is
Focal length of prime lens: 50 mm
Bayonet: Canon EF
Filter thread diameter: 55 mm
Aperture F at min. focal length: 2.8
Minimum aperture F: 45
Number of aperture blades: 7
Number of element groups: 9
Number of elements: 10