EF 400mm f/5.6L USM
Canon's lightest 400mm lens (less weight than the 70-200mm f/2.8 or 100-400mm L-series zooms) is another terrific choice when portability and ability to easily follow-focus on erratically moving subjects is a priority. There's no I.S., but the 400mm f/5.6L makes up for this with arguably the fastest AF in any Canon super-tele lens. It's been a favorite of wildlife shooters, especially for birds in flight images, for many years. It's also a very sharp lens, even at its widest f/5.6 aperture.
- Excellent option for outdoor sports, wildlife, and surveillance-type images, when compact size and portability are priorities
- Superb AF speed, so it works well when shooting still images of moving subjects in daylight conditions
- Mounted on a camera with 1.6x "crop factor" (such as EOS 60D or EOS 7D), it's equivalent to a 640mm f/5.6 lens, that's light enough to easily hand-hold
- Compatible with all Canon EF 1.4x and 2x tele extenders (note: with 1.4x, AF at Center point only with 45-point AF systems, and with 61-point AF systems after firmware upgrade)