Irix 15mm f/2.4 Firefly Pentax KA/KAF/KAF2/KAF3

Brand: Irix
Description: Mount: Pentax KA/KAF/KAF2/KAF3, lens type: wide-angle, focal length: fixed, prime lens focal length: 15 mm, aperture F at min. focal length: 2.40, aperture F at max. focal length: 2.4
Type: Lens
Focal length: Permanent
Lens type: Wide angle
Minimum focus distance: 0.28 m
Focal length of prime lens: 15 mm
Bayonet: Pentax KA/KAF/KAF2/KAF3
Filter thread diameter: 95 mm
Aperture F at max. focal length: 2.4
Aperture F at min. focal length: 2.4
Minimum aperture F: 22
Number of aperture blades: 9
Security: Dustproof, waterproof
Number of aspherical elements: 2
Number of element groups: 11
Number of low dispersion elements: 2
Number of elements: 15