The RF 200-800mm f/6.3-9 IS USM Lens from Canon provides superb optical performance while maintaining mobility distinguishing itself with an expansive and unique zoom range. Its compact design is complemented by five and half stops of image stabilization to enable strong handheld performance. This lens provides a zoom range that excels in situations where you can't get closer to your subject without compromising your shot, such as wildlife, nature, and outdoors sports. Swift and nearly silent autofocusing is achieved through Canon's Nano USM drive system. The focus/control ring on the lens barrel can directly adjust shutter speed, aperture, exposure compensation, and other settings. Two lens function buttons are also available on the barrel for immediate access to your preferred camera settings. The signature white paint functions as a heat countermeasure when shooting for extended periods under harsh light and works together with the lens’s weather-resistant design to prevent damage from the elements. Also incorporated are three ultra-low dispersion elements to reduce chromatic and spherical aberrations as well as a Super Spectra coating to minimize ghosting and flare caused by lens surface reflection.