Canon EF 200-400mm f/4L IS USM Lens with Internal 1.4x Extender

The high-performing EF 200-400mm f/4L IS USM super telephoto zoom lens with Internal 1.4x Extender offers a wide 200-400mm Focal Length with f/4-32 Aperture Range. The extender provides a simple lever switch that can give you an extended focal range and aperture of 280-560mm f/5.6. Its lens construction is made up of One Fluorite and Four UD Lens Elements with Fluorine Front and Rear Lens Coating to minimize aberrations, ghosting, and glare. Three-Mode Optical Image Stabilization helps to enable fast AF and the featured AF stop buttons will allow you to manipulate the AF operation if needed. With the internal focusing system and Ultra-sonic Auto Focus motor, fast, smooth and accurate autofocus is provided. The Power Focus mode however, offers the photographer to fully control the focus though the playback ring while filming. This EF Mount L-Series Lens is highly resistant to dust and water. 

Product Features in Detail

Experience incredible extendable super-telephoto performance
The professional-grade 200-400mm zoom with constant f/4 max aperture and built-in 1.4x extender increases focal length to 560mm for up-close action.

Achieve maximum sharpness in every condition
The Image Stabilizer technology enables the use of shutter speeds up to four stops longer than normal without camera shake for great action shots.

Choose from three Image Stabilizing modes
The choice of three Image Stabilizing modes provide effective performance whilst panning and instant stabilisation only during the moment of exposure.

Capture action instantly with quick, intelligent focus
Enjoy fast, near-silent autofocus thanks to a ring-type ultrasonic AF motor and never miss the perfect shot.

Shoot anywhere with its hardy, magnesium-alloy construction
Magnesium alloy adds strength and durability, but not weight sealing the lens resistance against dust and moisture no matter your location.

Instinctive controls deliver enhanced handling
Stay in charge with full-time manual focus override, focus-stop and focus-preset controls on the lens barrel. Power Focus is available for EOS movies.