Nikon AI Nikkor 400mm F/5.6 IF-ED

Specifications01

MountNIKON F

Focal length400mm

Max aperturef/5.6

TypeTelephoto · Prime

Release year1978

Weight1200 g

Filter size72 mm

Min focus distance4 m

Aperture blades9

Optical elements7

Groups6

AutofocusNo

StabilizationNo

Aperture controlAperture ring (Manual settings only)

Lens hoodBuilt-in telescopic round

TeleconvertersNikon Teleconverter TC-14B→ 560mm F/7.8 Nikon Teleconverter TC-300→ 800mm F/11.2 Nikon Teleconverter TC-301→ 800mm F/11.2

EraFilm era

Production statusDiscontinued

Additional Info02

Lens TypeSuper telephoto prime lens

Field Notes02

Nikon F-mount 400mm f/5.6 fixed focal-length telephoto lens. Designed for distant subjects such as sports and wildlife, with an Internal Focus (IF) design.

AI-assisted summary — verify against linked sources

Catalog note · source: thelensdb

Sources03

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Other Mounts03

No alternate mounts are indexed for this family yet.