Canon EF 800mm f/5.6L IS USM Lens

TheEF 800mm f/5.6L IS USM LensfromCanonis currently Canon's longest telephoto lens, and an excellent choice for any long-distance application such as outdoor sports, wildlife, and photojournalism. Even though it has a long 800mm focal length, the magnesium alloy used in the construction for this lens makes it lighter then the 600mm f/4L lens, weighing in at less than 10 lb.

This lens shares the same lightweight, weather-resistant construction as the rest of theL-series super telephoto lenses, as well as their improved control layout, weight distribution, and mechanical manual focus. Itstwo-mode Image Stabilizersystem allows the use of shutter speeds up tofour times slower with no perceptible increase in image blur. Mode 1 is best used for still subjects while Mode 2 is optimized topan withmoving subjects.

Anultrasonic autofocus motor enables fast,smooth and quiet AF action, whilea focus preset function allows you to store focusing positions and return to them in an instant when needed. An AF stop button will pause autofocus with just a touch and manual focus override allows precise manual focus even in AF mode. A focus range limiter function lets you to save time by establishing a focus distance range for your specific subject.

For optimum visual performance, the lens incorporates four types of special optical elements: aspherical elements to correct spherical aberrations, and refracting Fluorite, UD and Super UD (ultra-low dispersion) elements to eliminate secondary chromatic aberrations. An integrated, rotating tripodcollar provides balance and stability and the rear drop-in filter slot and holder enable easy filter use. A large lens hood, hard case and lens caps are included.