Lens
Clens
EF 400mm f/2.8L USM
Full-frame zoom · 6450g
Max Aperture
f/2.8
Weight
6450g
Min Focus Distance
400cm
Mount: Canon EF — compatible with all Canon EF-mount bodies.
Focus
Autofocus
Mount
Canon EF
Format
35mm full frame
Groups
9
Elements
11
Weight
6450g
Length mm
348
Spec Notes
Canon Museum, April 1991. Non-IS super-tele. Rear 48mm drop-in → filter Mm omitted.
Stabilized
No
Diameter mm
167
Max Aperture
f/2.8
Min Focus Distance
400cm
Aperture Blades
8
Min Focus Basis
Canon: from focal plane
Introduced
1991