N°202822 · Family detail
NikonWide·NIKON F mount·1981
Nikon AI-S Nikkor 20mm F/3.5
Specifications01
MountNIKON F
Focal length20mm
Max aperturef/3.5
TypeWide · Prime
Release year1981
Weight235 g
Filter size52 mm
Min focus distance0.3 m
Aperture blades7
Optical elements11
Groups8
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodHK-6 - Clamp-on round
TeleconvertersNikon Teleconverter TC-200→ 40mm F/7
Nikon Teleconverter TC-201→ 40mm F/7
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeUltra-wide angle prime lens
Field Notes02
Nikon F-mount AI-S Nikkor 20mm f/3.5 is a wide-angle prime lens for general wide-area photography and landscapes. It uses a fixed maximum aperture of f/3.5.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.