Canon EF 70-200mm f/2.8L USM AF Lens - Lens Cap E-77U - Rear Lens Cap E - Lens Hood ET-83 II - LZ-1324 Lens Case - Strap - Tripod Collar - Canon 1 Year USA Warranty - Bundle Includes: - 77mm Filter Kit (UV/CPL/ND2) - Flex Lens Shade - Lens Cap Leash - Professional Lens Cleaning Kit - Lens Hood ET-83 II - Pro Software Package (Includes Corel PaintShop Pro X9; Corel VideoStudio 9; Corel AfterShot 2 Pro; AutoFx Mystical Ultimate Bundle Gen2; FileCenter Professional)</br>Maximum Aperture: 1:2.8</br>Four UD-glass elements to correct chromatic aberrations</br>Lens Construction: 18 elements in 15 groups</br>Inner focusing system with USM</br></br>Product Description</br></br>The Canon EF 70-200mm f/2.8L USM lens is a wide-aperture telephoto zoom designed for professional photographers and advanced hobbyists. It's one of the most popular telephoto zoom lenses in the world. Designed to work with both full-frame and APS sensor Canon DSLRs, this fast autofocus high-performance lens includes four UD glass elements, which promote contrasty, accurate images. The wide constant f/2.8 maximum aperture provides shallow depth of field so the subject is better separated from the background. A focus range limiter helps reduce focus time. Its ultrasonic motor focuses quickly and smoothly. Minimum focus is 4.9 feet. A removable tripod collar is included. What you should know about this lens: Compatible with tele extenders: You can increase this lens's range--The lens is compatible with the Canon Extenders EF 1.4x and 2x II. Stellar image quality: Image quality is comparable to that usually achieved with a prime lens thanks to four UD glass elements that correct chromatic aberrations. Wide aperture: The constant f/2.8 maximum aperture makes the camera suitable for low-light use.</br><br/>http://www.amazon.com/gp/product/B00ZQKKI4C