A truly versatile wide-angle zoom featuring an advanced optical design and constant f/4 maximum aperture, the Canon EF 11-24mm f/4L USM Lens is a member of the esteemed L-series of lenses designed for full-frame EOS DSLRs- One Super UD element and one UD element offer a significant reduction in chromatic aberrations while four aspherical elements help to minimize distortions throughout the zoom range and provide consistent edge-to-edge sharpness and illumination- Both SWC and ASC coatings have been applied to the elements in order to reduce lens flare and ghosting for increased contrast and color accuracy- Ideally suited for landscape and architectural photography, this lens covers ultra-wide to wide-angle perspectives and backs up its versatile zoom range with sophisticated optical components and intuitive handling- In regard to focusing performance, a ring-type Ultrasonic Motor offers fast, smooth, and near-silent autofocus, which is further benefitted by full-time manual focus operation and an internal focusing design- The lens is both water and dust-resistant, and fluorine coatings have also been applied to the front and rear elements to protect against fingerprints and smudges from affecting image quality-{Key Features} - EF Mount L-Series Lens/Full-Frame Format - Constant f/4 Maximum Aperture - Super UD, UD, and 4 Aspherical Elements - SWC, Air Sphere, and Fluorine Coatings - Ring-Type USM Autofocus Motor - Internal Focus; Full-Time Manual Focus - Weather-Resistant Design - Rounded 9-Blade Diaphragm {Box Contents} - Front Lens Cap - Lens Dust Cap E (Rear) - LP 1424 Lens Case
