Nikon AI-S Nikkor 400mm F/2.8 ED-IF

Specifications01

MountNIKON F

Focal length400mm

Max aperturef/2.8

TypeTelephoto · Prime

Release year1985

Weight5150 g

Min focus distance4 m

Aperture blades9

Optical elements8

Groups6

AutofocusNo

StabilizationNo

Aperture controlAperture ring (Manual settings + Auto Exposure setting)

Lens hoodBuilt-in telescopic round

TeleconvertersNikon Teleconverter TC-14B→ 560mm F/3.9 Nikon Teleconverter TC-300→ 800mm F/5.6 Nikon Teleconverter TC-301→ 800mm F/5.6

EraFilm era

Production statusDiscontinued

Additional Info02

Lens TypeSuper telephoto prime lens

Field Notes02

Nikon AI-S Nikkor is a 400mm f/2.8 ED-IF F-mount telephoto prime lens. Intended for sports, wildlife, and low-light long-distance shooting where a wide maximum aperture is useful.

AI-assisted summary — verify against linked sources

Catalog note · source: thelensdb

Sources03

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Other Mounts03

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