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Canon EF 400 mm f/ 5.6 L USM Lens

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Canon EF 400 mm f/ 5.6 L USM  lens

Canon EF 400 mm f/ 5.6 L USM  lens

Canon EF 400 mm f/ 5.6 L USM  lens

Canon EF 400 mm f/ 5.6 L USM  lens


Canon EF 400 mm f/ 5.6 L USM  MTF Chart

Optical design

Canon EF 400 mm f/ 5.6 L USM  optical design

Format: 35mm SLR

Type: Prime lens

Focusing: Auto Focus (AF)

Lens mounts: Canon EF, EF-S

First year of production: 1993

Optical design: 7 elements in 6 groups

Features: Ultra-Sonic Motor
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Average price: $1377


Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)

Additional information:

Canon EF 400 mm f/ 5.6 L USM  is a compact professional L-series telephoto prime lens  for Canon EOS digital and film cameras

It is one of the first EF lineup lenses and it is still in great demand.

It features a good price-quality relationship.

Equivalent focal length for APS-C cameras:    640 mm.

The aperture has eight blades.  Bokeh is beautiful when wide open aperture, circles of confusion are rounded.

The lens has a built-in retractable hood, very convenient in use.

The Canon EF 400 mm f/ 5.6 L USM  delivers a very sharp image from f/ 5.6 onward.

The optical scheme of the lens includes one Super UD (2nd, characteristics close to fluorite glass)  and one UD (5th) glass elements,

The Canon EF 400 mm f/ 5.6 L USM lens is well resistant to back and side light, especially with a built-in  hood.

Focusing is internal. The front lens does not rotate, which enables the use of a polarizing or gradient filter.  Manual adjustment of sharpness is possible at any time by turning the focus ring.

The built-in ultra-sonic motor makes focusing very fast and silent.  . The lens provides steady focusing in poor lighting conditions.

The Canon EF 400 mm f/ 5.6 L USM  is perfectly fit for shooting animals, wild life, remote fragments and sportive events, as well as for photojournalism.  It is better to use it with full-frame sensors.

The lens is compatible with Canon extenders:  EF 1.4X and EF 2.0X.

The lens comes completes with a leather tube.

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Posted by: Sergei Borodin   Date of publication: 14.10.2010

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