Sigma AF 28-70mm f/2.8-4 DG Pentax KA/KAF/KAF2

Weight: 255 g
Brand: Sigma
Description: Mount: Pentax KA/KAF/KAF2/KAF3, lens type: standard, focal length: variable, autofocus, min. focal length: 28 mm, max. focal length: 70 mm, aperture F at min. focal length: 2.8
Type: Lens
Functions: Focusing motor for Nikon F
Length: 62.5mm
Diameter: 67.5mm
Max. focal length: 70 mm
Min. focal length: 28 mm
Focal length: Variable
Lens type: Standard
Zoom ratio: 2.5x
Max viewing angle: 75.4 deg.min
Minimum focus distance: 0.5 m
Auto focus: There is
Bayonet: Pentax KA/KAF/KAF2/KAF3
Filter thread diameter: 58 mm
Aperture F at max. focal length: 4
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Minimum viewing angle: 34.3 deg.min
Number of aspherical elements: 1
Number of element groups: 8
Number of elements: 11