Canon EF 400mm f/5.6L USM Lens

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.

Light. Portable. Excellent handling. Sharp. And amazingly fast autofocus. The 400mm f/5.6L is all of these things, and a premier choice for wildlife and nature photographers – one of the finest telephoto lenses in the world for fast-moving subjects such as birds in flight or motor sports. It uses UD-glass elements to provide outstanding optical quality, even wide open, and image quality is preserved when used with either the EF 1.4x II or EF 2x II tele extenders. It accepts 77mm filters, and has a built-in removable tripod collar.

Focal length and maximum aperture: 400 mm 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 / 11.5ft
Filter size: 77mm