Olympus 11-22mm f/2.8-3.5

Weight: 485 g
Brand: Olympus
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: 92.5 mm
Diameter: 75 mm
Max. focal length: 22 mm
Min. focal length: 11 mm
Focal length: Variable
Lens type: Wide angle
Zoom ratio: 2x
Max viewing angle: 89 deg.min
Minimum focus distance: 0.28 m
Auto focus: There is
Bayonet: 4/3
Filter thread diameter: 72 mm
Aperture F at max. focal length: 3.5
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Number of aperture blades: 7
Security: Dustproof, frost resistance, moisture protection
Minimum viewing angle: 53 degrees min
Number of aspherical elements: 2
Number of element groups: 10
Number of elements: 12