Nikon Nikon F Prime

AI-S Nikkor 400mm f/3.5

400mm
f/3.5
Prime
2800 g
Min focus 4 m

Quick answer

The Nikon AI-S Nikkor 400mm f/3.5 is a super telephoto prime lens covering 400mm at f/3.5 for the Nikon F mount. Its moderate maximum aperture works best in good light or with a higher ISO.

About this lens

A 400mm f/3.5 telephoto prime lens, the Nikon AI-S Nikkor 400mm f/3.5 is designed for Nikon F mount bodies. It brings distant subjects closer for sports, wildlife and events.

Nikon AI-S Nikkor 400mm f/3.5 specifications

Brand: Nikon
Mount: Nikon F
Focal length: 400mm
Maximum aperture: f/3.5
Lens type: Prime
Format coverage: full-frame
Optical construction: 8 elements in 6 groups
Autofocus motor: none
Minimum focus distance: 4 m
Filter thread: 122 mm
Weight: 2800 g
Length: 304 mm
Diameter: 134 mm

Specification source: en.wikipedia.org

What can you shoot with the Nikon AI-S Nikkor 400mm f/3.5?

At 400mm this is a super telephoto prime, which typically suits:

Wildlife and birds
Motorsport and field sports
Distant subjects and the moon

Its moderate maximum aperture works best in good light or with a higher ISO.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor. Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	400mm	5.2°	6.2°
APS-C	1.5x	600mm	3.4°	4.1°

Try the field-of-view calculator

Frequently asked questions

What mount does the Nikon AI-S Nikkor 400mm f/3.5 use?

It uses the Nikon F mount, so it fits Nikon F cameras directly.

What is the focal length of the Nikon AI-S Nikkor 400mm f/3.5?

It is a fixed 400mm lens with a maximum aperture of f/3.5. That makes it a super telephoto lens.

Is the Nikon AI-S Nikkor 400mm f/3.5 a prime or a zoom lens?

It is a prime lens with a fixed 400mm focal length. Primes usually open wider than zooms; this one opens to f/3.5.

What is the Nikon AI-S Nikkor 400mm f/3.5 equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 600mm on full frame, with a 3.4° horizontal and 4.1° diagonal field of view. These figures are calculated from the focal length and crop factor.