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