Sigma 70mm f/2.8 DG Macro Art Nikon F

Weight: 515 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: 105.8 mm
Diameter: 70.8 mm
Focal length: Permanent
Lens type: Macro lens
Minimum focus distance: 25.8 m
Auto focus: There is
Focal length of prime lens: 70 mm
Bayonet: Nikon F
Filter thread diameter: 49 mm
Aperture F at max. focal length: 2.8
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Number of aperture blades: 9
Security: Dustproof, waterproof
Number of element groups: 10
Number of low dispersion elements: 4
Number of elements: 13