A long-reaching telephoto zoom characterized by a sophisticated optical design and advanced image stabilization technologies, the Canon EF 100-400mm f/4.5-5.6L IS II USM Lens is part of the esteemed L-series developed for full-frame EOS DSLRs. One fluorite element and one Super UD element have been incorporated into the lens' construction, and both help to reduce aberrations and distortions throughout the zoom range in order to deliver notable clarity, image sharpness, and faithful color reproduction. An Air Sphere Coating has also been applied to lens elements in order to reduce lens flare and ghosting for more contrast-rich imagery. Benefitting the optical components of the lens, a four-stop effective Image Stabilizer helps to minimize the appearance of camera shake and can be dedicated to different styles of shooting. Furthermore, a redeveloped rotation-type zoom ring pairs with an internal focusing mechanism, and an Ultrasonic Motor, to deliver quick and intuitive handling to benefit handheld shooting. Positioned as a versatile option for sports and wildlife photographers, this lens' list of attributes make it a viable telephoto zoom for a variety of shooting applications. Product Highlights: EF-Mount Lens/Full-Frame Format Aperture Range: f/4.5 to f/38 One Fluorite and One Super UD Element Air Sphere Coating Ring-Type Ultrasonic Motor AF System Optical Image Stabilizer Rotating Zoom Ring & Torque Adjustment Weather-Sealed Design, Fluorine Coating Detachable, Rotatable Tripod Collar Rounded 9-Blade Diaphragm This 6AVE Bundle includes: 1- Canon EF 100-400mm f/4.5-5.6L IS II USM Lens 1- 16GB SDHC Class 10 Secure Digital High Speed Memory Card1- 77mm Ultraviolet UV Filter (Glare Not Your Friend!)1- Memory Card Wallet 1- MicroFiber Cloth 2 Year Extended Warranty