Sigma AF 12-24mm f/4.5-5.6 EX DG Aspherical HSM Nikon F

Weight: 600 g
Brand: Sigma
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, ultrasonic motor, internal focusing
Length: 102.5mm
Diameter: 87 mm
Max. focal length: 24 mm
Min. focal length: 12 mm
Focal length: Variable
Lens type: Wide angle
Zoom ratio: 2x
Max viewing angle: 12.2 deg.min
Minimum focus distance: 0.28 m
Auto focus: There is
Bayonet: Nikon F
Aperture F at max. focal length: 5.6
Aperture F at min. focal length: 4.5
Minimum aperture F: 22
Number of aperture blades: 6
Minimum viewing angle: 84.1 deg.min
Number of aspherical elements: 3
Number of element groups: 12
Number of low dispersion elements: 4
Number of elements: 16