Pentax SMC DA 17-70mm f/4 AL IF SDM

Weight: 485 g
Brand: Pentax
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: 93.5 mm
Diameter: 75 mm
Max. focal length: 70 mm
Min. focal length: 17 mm
Focal length: Variable
Lens type: Standard
Zoom ratio: 4.1x
Max viewing angle: 79 degrees min
Minimum focus distance: 0.28 m
Auto focus: There is
For non-full frame cameras only: Yes
Bayonet: Pentax KA/KAF/KAF2/KAF3
Filter thread diameter: 67 mm
Aperture F at max. focal length: 4
Aperture F at min. focal length: 4
Minimum aperture F: 22
Number of aperture blades: 7
Minimum viewing angle: 2.3 deg.min
Number of element groups: 12
Number of elements: 17