Canon EF 1200mm f/5.6L USM

Brand: Canon
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
Additional Information: Drop-in filter
Type: Lens
Functions: Ultrasonic motor, internal focusing
Length: 836 mm
Diameter: 225 mm
Focal length: Permanent
Lens type: Telephoto lens
Max viewing angle: 2.05 deg.min
Minimum focus distance: 1.4 m
Focal length of prime lens: 1200 mm
Bayonet: Canon EF
Filter thread diameter: 48 mm
Aperture F at min. focal length: 5.6
Minimum aperture F: 32
Number of aperture blades: 8
Minimum viewing angle: 1.45 deg.min
Number of element groups: 10
Number of elements: 13