Canon EF 16-35mm f/2.8L III USM Lens

Featured by a revamped optical design, the Canon EF 16-35mm f/2.8L III USM is a charger wide-angle zoom and member of the dignified L-series of lenses. Highlighting a series of specialized elements, the lens uses a trio of aspherical elements and two ultra-low dispersion glass elements to control aberrations for high sharpness and clarity. Both SWC and ASC coatings have also been applied to the elements to minimize lens flare and ghosting for increased contrast and color accuracy in an image.

Set off its optical prowess, an Ultrasonic Motor made of a ring style shape produces fast, smooth, and near-silent autofocus performance, which is further helpful for full-time manual focus operation and an internal focusing design. The water and dust-resistant lens with fluorine coatings protect the lens against fingerprints and smudges from affecting image quality.

• Wide-angle zoom 16-35mm lens is compatible with full-frame Canon EF-mount DSLRs, as well as APS-C-sized models featured with a 25.6-56mm equivalent focal length range.

• Continuous f/2.8 maximum aperture produces consistent performance and excellent light transmission throughout the zooming range.

• Two large-diameter glass-molded dual-surface aspherical elements and one ground aspherical element help to reduce distortions and spherical aberrations all over the zoom range in order to maintain edge-to-edge sharpness and illumination.

• Two ultra-low dispersion elements are used to reduce chromatic aberrations as well as discard color blurring around the edges of subjects.

• Both a Subwavelength Coating (SWC) and an Air Sphere Coating (ASC) have been applied to lens elements to reduce backlit flaring and ghosting for maintained light transmission and high contrast in strong lighting conditions.

• A ring-shaped Ultrasonic Motor (USM), along with an internal focusing system, high-speed CPU, and optimized AF algorithms, are induced to deliver fast, precise, and near-silent autofocus performance as well as full-time manual focus override.

• As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.

• A protective fluorine coating has been applied to the front bulbous element to resist fingerprints and smudges and to make cleaning significantly easier.

• The rounded nine-blade diaphragm contributes to a pleasing out-of-focus quality that benefits the use of shallow depth of field and selective focus techniques.