Bower 7.5mm f/3.5 Fisheye Micro 4/3

Weight: 197 g
Brand: Bower
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
Length: 48 mm
Focal length: Permanent
Lens type: Ultra wide angle fisheye
Minimum focus distance: 0.1 m
Focal length of prime lens: 75 mm
Bayonet: Micro 4/3
Aperture F at max. focal length: 3.5
Aperture F at min. focal length: 3.5
Minimum aperture F: 22
Number of aperture blades: 6
Number of element groups: 7
Number of elements: 9