Canon EF 200-400mm 4L IS USM Extender 1.4x

A professional 200-400 mm zoom lens with a constant aperture of f/4. An integrated extender increases the focal length by a factor of 1.4 to 280-560 mm. The image stabilizer allows for sharp images with exposure times up to four stops longer than normally possible. Three IS modes are available for effective stabilization, enabling compensation during panning movements and stabilization just at the moment of capture.

The use of a magnesium alloy for the housing material ensures stability and durability without adding extra weight. The lens is protected against dust and moisture, and the use of a fluorine coating makes it easy to clean. The fast and virtually silent autofocus is powered by a ring ultrasonic motor. Manual focus adjustment is always possible, and dedicated controls for aperture selection and focus preset are available on the lens body. The Power Focus is also available in EOS Movie mode.