Sigma AF 14mm f/2.8 EX ASPHERICAL HSM Pentax KA/KAF/KAF2

Weight: 630 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, internal focusing
Length: 91 mm
Diameter: 82 mm
Focal length: Permanent
Lens type: Wide angle
Max viewing angle: 114.2 deg.min
Minimum focus distance: 0.18 m
Auto focus: There is
Focal length of prime lens: 14 mm
Bayonet: Pentax KA/KAF/KAF2/KAF3
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Number of aperture blades: 7
Number of aspherical elements: 2
Number of element groups: 10
Number of low dispersion elements: 2
Number of elements: 14