AF-S NIKKOR 20mm f/1.8G ED

Overview

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	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

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