Nikon 40mm f/2.8G AF-S DX Micro NIKKOR

Weight: 235 g
Brand: Nikon
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, macro mode
Length: 64.5 mm
Diameter: 68.5mm
Max. focal length: 40 mm
Min. focal length: 28 mm
Focal length: Permanent
Lens type: Macro lens
Zoom ratio: 14.3x
Minimum focus distance: 0.16 m
Auto focus: There is
For non-full frame cameras only: Yes
Focal length of prime lens: 40 mm
Bayonet: Nikon F
Filter thread diameter: 52 mm
Aperture F at max. focal length: 2.8
Aperture F at min. focal length: 2.8
Minimum aperture F: 22
Number of aperture blades: 7
Minimum viewing angle: 38.5 deg.min
Number of element groups: 7
Number of elements: 9