Sigma AF 70-200mm f/2.8 EX HSM Pentax KA/KAF/KAF2

Weight: 1270 g
Brand: Sigma
Description: Mount: Pentax KA/KAF/KAF2/KAF3, lens type: standard, focal length: variable, autofocus, min. focal length: 70 mm, max. focal length: 200 mm, aperture F at min. focal length: 2.
Type: Lens
Functions: Focusing motor for Nikon F, ultrasonic motor, macro mode
Length: 184 mm
Diameter: 86.2 mm
Max. focal length: 200 mm
Min. focal length: 70 mm
Focal length: Variable
Lens type: Standard
Zoom ratio: 2.9x
Max viewing angle: 34.3 deg.min
Minimum focus distance: 1.8 m
Auto focus: There is
Bayonet: Pentax KA/KAF/KAF2/KAF3
Filter thread diameter: 77 mm
Aperture F at max. focal length: 2.8
Aperture F at min. focal length: 2.8
Minimum aperture F: 32
Number of aperture blades: 9
Minimum viewing angle: 12.3 deg.min
Number of element groups: 14
Number of low dispersion elements: 4
Number of elements: 17