N°102934 · Family detail
CanonTelephoto·CANON EF mount·1999
Canon EF 400mm F/2.8L IS USM
Specifications01
MountCANON EF
Focal length400mm
Max aperturef/2.8
TypeTelephoto · Prime
Release year1999
Weight5370 g
Physical length349 mm
Min focus distance3 m
Max magnification0.1499
Aperture blades8
Optical elements17
Groups13
AutofocusYes
StabilizationYes
Aperture controlNone
The aperture is controlled from the camera
Lens hoodET-155 - Clamp-on round
TeleconvertersCanon Extender EF 1.4X II→ 560mm F/3.9
Canon Extender EF 1.4X III→ 560mm F/3.9
Canon Extender EF 2X II→ 800mm F/5.6
Canon Extender EF 2X III→ 800mm F/5.6
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeSuper telephoto prime lens
Field Notes02
Canon EF 400mm F/2.8L IS USM prime telephoto lens with a constant f/2.8 aperture, intended for sports, wildlife, and other long-reach low-light use. Includes image stabilization.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.