Sigma AF 300mm f/2.8 EX APO HSM Nikon F

Weight: 2400 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, ultrasonic motor
Length: 214 mm
Diameter: 119 mm
Focal length: Permanent
Lens type: Telephoto lens
Max viewing angle: 82 deg.min
Minimum focus distance: 2 m
Auto focus: There is
Focal length of prime lens: 300 mm
Bayonet: Nikon F
Filter thread diameter: 46 mm
Aperture F at min. focal length: 2.8
Minimum aperture F: 32
Number of aperture blades: 9
Number of element groups: 10
Number of low dispersion elements: 2
Number of elements: 12