|Focal Length & Maximum Aperture||400mm 1:5.6|
|Lens Construction||7 elements in 6 groups|
|Diagonal Angle of View||6° 10'|
|Focus Adjustment||Inner focusing system with USM|
|Closest Focusing Distance||3.5m / 11.5 ft.|
|Max. Diameter x Length, Weight||3.5" x 10.1", 2.8 lbs. / 90.0 x 256.5mm, 1250g|
CANON EF 400MM F5.6 L USM is compatible with all Canon EOS mount interchangable cameras.
This high-performance lens was designed with portability and handling ease in mind. One Super UD-glass element, whose characteristics are similar to fluorite, and one UD-glass element result in sharp pictures from corner-to-corner. The lens also has a built-in hood and a detachable tripod mount.