N°102937 · Family detail
CanonTelephoto·CANON RF mount·2021
Canon RF 400mm F/2.8L IS USM
Specifications01
MountCANON RF
Focal length400mm
Max aperturef/2.8
TypeTelephoto · Prime
Release year2021
Weight2890 g
Physical length367 mm
Min focus distance2.5 m
Max magnification0.1701
Aperture blades9
Optical elements17
Groups13
AutofocusYes
StabilizationYes
Aperture controlNone
The aperture is controlled from the camera
Lens hoodET-155 (WIII) - Clamp-on round
ET-155B - Clamp-on round
TeleconvertersCanon Extender RF 1.4X→ 560mm F/3.9
Canon Extender RF 2X→ 800mm F/5.6
EraDigital era
Additional Info02
Lens TypeSuper telephoto prime lens
Field Notes02
Canon RF 400mm prime telephoto lens with a maximum aperture of f/2.8 and built-in image stabilization. Intended for low-light and subject isolation such as sports and wildlife.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.