Focal length 20 mm
Maximum aperture f/1.8
Minimum aperture f/16
Lens construction 13 elements in 11 groups (including 2 ED glass elements, 2 aspherical lens elements and Nano Crystal Coat)
Angle of view 90° (74° with Nikon DX format)
Minimum focus distance 0.2 m/0.66 ft from focal plane
Maximum reproduction ratio 0.23x
No. of diaphragm blades 7 (rounded)
Filter-attachment size 77 mm
Diameter x length
(distance from camera lens mount flange)
Approximately 82.5 x 80.5 mm/3.2 x 3.2 in.
Weight Approximately 355 g/12.6 oz
Supplied accessories 77 mm snap-on Front Lens Cap LC-77, Rear Lens Cap LF-4, Bayonet Hood HB-72, Flexible Lens Pouch CL-1015

MTF Chart

Spatial Frequencies S: Sagittal M: Meridional
10 lines/mm
30 lines/mm

How to read the MTF chart

Lens Construction

  • Aspherical lens elements
  • ED glass elements

F mount Lenses

Zoom

Wide Zoom

Normal Zoom

Telephoto Zoom

Prime

Wide

Normal

Telephoto

Special-Purpose

Micro

Fisheye

PC, PC-E

Teleconverters

Manual-focus

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