Canon EF 50mm f/1.8 STM Lens, USA Warranty - Bundle with 49mm UV Filter, Cleaning Kit, Lenscap Leash II Canon EF 50mm f/1.8 STM Lens - Front Lens Cap E-49 - Rear Lens Cap E - Canon 1 Year Warranty - Bundle Includes: - 49mm UV Filter - Cleaning Kit - Lenscap Leash II Compact, lightweight fixed focal length lens ideal for everyday photos, and with a large f/1.8 aperture, a perfect lens for low-light photography and creative background blur 80mm effective focal-length when attached to an APS-C camera, optimal for portraits and photos of fast moving subjects such as children and pets A stepping motor (Gear-type STM) supports the Movie Servo AF function in providing smooth and quiet continuous AF during video recording, as well as when shooting photos Improved exterior design includes new focus ring placement making it the most compact Canon 50mm lens