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Canon EF 400mm f/5.6L USM

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Prime lens

A prime lens by Canon for Full frame cameras, 400mm f/5.6. A light, fast-focusing birding prime without stabilisation.

MakerCanon
Focal length400mm (prime)
Maximum aperturef/5.6
Made forFull frame sensors
MountsCanon EF
Stabilisedno
Autofocusyes

What it frames like

1424355085135200400800400mm equiv.400mm
Its full-frame-equivalent focal length on the sensor it was made for.
Full frame 400mm · 5°APS-C (Canon) 640mm · 3°
How wide 400mm sees on each sensor it covers.
f/5.6
f/5.6 wide open, to scale against f/1.4.
  • On full frame (Canon EF): as marked, 400mm.
  • On APS-C (Canon) (Canon EF): like 640mm on full frame; f/5.6 gives about the depth of field of f/9 there.

Cameras it fits

Questions people ask

Compare with

See what it frames: its view on the Canon EOS 850D at any distance, and its depth of field, drawn to scale.