The EF 16-35mm f/2.8L II USM Lens from Canon is a high performance, water-resistant, ultra wide-angle L-series zoom lens. An f/2.8 maximum aperture is effective in low light situations and offers shallow depth of field focus control.
The optical design has been improved to offer better edge-to-edge image quality. In addition, it features 3 high-precision aspherical lens elements.
Its ultrasonic motor (USM) and improved AF algorithms will help the lens to focus faster and quieter. This definitely provides you a precision auto focusing and predictive tracking.
All of the "L" lenses deliver optical performance equal to similar fixed focal lengths lenses and provide tight seal structures for dust and water resistance.
The II's f/2.8 image quality degrades as the focal length increases with some rebound at 35mm. Stopping down improves the II's image quality noticeably.
*Image are for illustration purpose only
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