Type Fmount, Type G AF-S lens with built-in CPU and F mount
Format FX/35mm
Focal length 20mm
Maximum aperture f/1.8
Minimum aperture f/16
Lens construction 13 elements in, 11 groups, (including 2 ED lens elements, 2 aspherical lens elements, and lens elements with Nano-Crystal coatings)
Angle of view Nikon film SLR and FX-format D-SLR cameras: 94°, Nikon DX-format D-SLR cameras: 70°
Minimum focus distance 0.2m (0.66ft), from focal plane
VR (Vibration Reduction) image stabilization No
No. of diaphragm blades 7 (rounded diaphragm opening)
Coating Nano Crystal Coat
Diaphragm Fully automatic
Metering Full aperture
Filter-attachment size 77mm, (P = 0.75 mm)
Dimensions Approx. 82.5 mm maximum diameter x 80.5 mm (distance from camera lens mount flange)
Weight Approx. 355g (12.6 oz.)
Autofocus Yes
AF-S (Silent Wave Motor) Yes
Internal focusing Yes
Focus mode Manual, Manual/Auto
G-type Yes
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