Sigma AF 28-105mm F2.8-4 ASPHERICAL IF DG Sigma SA

Weight: 405 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, internal focusing
Length: 79.5 mm
Diameter: 77 mm
Max. focal length: 105 mm
Min. focal length: 28 mm
Focal length: Variable
Lens type: Standard
Zoom ratio: 3.8x
Max viewing angle: 75.4 deg.min
Minimum focus distance: 0.5 m
Auto focus: There is
Bayonet: Sigma SA
Filter thread diameter: 72 mm
Aperture F at max. focal length: 4
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Number of aperture blades: 8
Minimum viewing angle: 23.3 deg.min
Number of aspherical elements: 1
Number of element groups: 11
Number of elements: 12