Sigma AF 17-35mm f/2.8-4 EX DG ASPHERICAL Pentax KA/KAF/KAF2

Weight: 560 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: Hood LH825_04
Type: Lens
Functions: Focusing motor for Nikon F, internal focusing
Length: 88.7 mm
Diameter: 83.5 mm
Max. focal length: 35 mm
Min. focal length: 17 mm
Focal length: Variable
Lens type: Wide angle
Zoom ratio: 2.1x
Max viewing angle: 103.7 deg.min
Minimum focus distance: 0.27 m
Auto focus: There is
Bayonet: Pentax KA/KAF/KAF2/KAF3
Filter thread diameter: 77 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: 63.4 deg.min
Zoom in macro mode: 0.22
Number of aspherical elements: 2
Number of element groups: 13
Number of low dispersion elements: 1
Number of elements: 16