The Canon EF 70–200mm f/2.8L IS III USM Lens is designed to meet the requirements of wildlife & sports photography. This lens is compatible with Canon EF-mount cameras, and had an optical design that features five UD elements, to suppress distortions throughout the zoom range. Canon's Air Sphere Coating assists in reducing ghosting & flare, to improve image clarity & saturation. A fluorite coating, on the front & rear of the lens, resists smudges & fingerprints. The ultrasonic autofocus motor ensures quick & near-silent operation. Designed with an optical image stabilization feature, camera shake is lowered by 3.5 stops. This telephoto zoom lens has a dust/water-resistant body that makes it suitable for use in harsh conditions.