Pentax SMC DA 40mm f/2.8 Limited HD

Weight: 89 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: 15 mm
Diameter: 63 mm
Focal length: Permanent
Lens type: Wide angle
Auto focus: There is
For non-full frame cameras only: Yes
Focal length of prime lens: 40 mm
Bayonet: Pentax KA/KAF/KAF2/KAF3
Filter thread diameter: 49 mm
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