Sigma AF 17-70mm f/2.8-4 DC MACRO HSM Minolta A

Weight: 535 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: 88.9 mm
Diameter: 79 mm
Max. focal length: 70 mm
Min. focal length: 17 mm
Focal length: Variable
Lens type: Standard
Zoom ratio: 4.1x
Max viewing angle: 72.4 deg.min
Auto focus: There is
For non-full frame cameras only: Yes
Bayonet: Minolta A
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: 7
Minimum viewing angle: 20.2 deg.min
Zoom in macro mode: 0.37
Minimum focusing distance in macro mode: 0.22 m
Number of aspherical elements: 3
Number of element groups: 13
Number of low dispersion elements: 1
Number of elements: 17