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

Summary02

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

Specifications from thelensdb

Where can this lens be adapted?

The Nikon F mount has a flange distance of 46.5 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work

Nikon G lenses have no aperture ring: use an adapter with an aperture lever. Nikon E lenses set the aperture electronically: use an electronic adapter.

Sony EAdapter · 28.5 mm
Canon RFAdapter · 26.5 mm
Nikon ZAdapter · 30.5 mm
Fujifilm XAdapter · 28.8 mm
L-MountAdapter · 26.5 mm
Micro Four ThirdsAdapter · 27.25 mm
Fujifilm G (GFX)Adapter · 19.8 mm
Covers full-frame: it can vignette on a medium format sensor.
Canon EF-MAdapter · 28.5 mm
Canon EFAdapter · 2.5 mm
A rear element that sticks out can hit the camera mirror.
Nikon FNative

Sources03

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Other Mounts03

No alternate mounts are indexed for this family yet.