SainSonic 50mm f/1.1 Sony E

Weight: 248 g
Brand: SainSonic
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: 60 mm
Diameter: 60 mm
Focal length: Permanent
Lens type: Standard
Minimum focus distance: 0.5 m
For non-full frame cameras only: Yes
Focal length of prime lens: 50 mm
Bayonet: Sony E
Filter thread diameter: 52 mm
Aperture F at max. focal length: 1.1
Aperture F at min. focal length: 1.1
Minimum aperture F: 16
Number of element groups: 5
Number of elements: 5