AF-S NIKKOR 20mm f/1.8G ED

  • AF-S NIKKOR 20mm f/1.8G ED
  • AF-S NIKKOR 20mm f/1.8G ED: angle1


  • The latest optical design technology ensures high resolution and superb reproduction of point images while minimizing chromatic aberration.
  • Realizes photographic expression utilizing the angle of view achieved with the ultra-wide-angle 20 mm focal length.
  • Nikon's original Nano Crystal Coat effectively reduces ghost and flare for clear, high-contrast images even in backlit situations.
  • Compact and lightweight design despite a large aperture ensures stress-free portability.
  • Shallow depth of field attained at the maximum aperture of f/1.8 enables the capture of beautifully blurred pictures.
  • Excellent close-up shots utilizing the significantly short minimum focus distance of 0.2 m can be taken.


Focal length

20 mm

Maximum aperture


Minimum aperture


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


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.


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 image image
30 lines/mm image image

Lens Construction

  • Aspherical lens elements
  • ED glass elements