Pentax SMC DA 40mm f/2.8 XS

Weight: 52 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
Length: 92 mm
Diameter: 62.9 mm
Focal length: Permanent
Lens type: Standard
Minimum focus distance: 0.4 m
Auto focus: There is
Focal length of prime lens: 40 mm
Bayonet: Pentax KA/KAF/KAF2/KAF3
Aperture F at max. focal length: 2.8
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Number of aperture blades: 9
Number of element groups: 4
Number of elements: 5