The Canon EF 16-35mm f/2.8L II USM Autofocus Lens is a high performance, water-resistant, and ultra wide-angle L-series lens. The optical design has been improved to offer better edge-to-edge image quality.
Specifically designed for improved edge-to-edge image quality that meets the strict requirements of professional and high-end amateur photographers alike, the lens lets you bring more area into focus while providing greater depth of field. The circular aperture, meanwhile, produces a beautiful and natural background blur when shooting at wider apertures.