Sigma AF 500mm f4.5 EX APO DG Nikon F

Weight: 3100 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
Additional Information: Thread for drop-in filter
Type: Lens
Functions: Internal focus
Length: 350 mm
Diameter: 123 mm
Focal length: Permanent
Lens type: Telephoto lens
Minimum focus distance: 4 m
Auto focus: There is
Focal length of prime lens: 500 mm
Bayonet: Nikon F
Filter thread diameter: 46 mm
Aperture F at min. focal length: 4.5
Minimum aperture F: 32
Number of aperture blades: 9
Number of element groups: 9
Number of elements: 12