The EF 16-35mm f/2.8L II USM is a high performance, water-resistant, and ultra wide-angle Canon L-series lens. It has been specifically designed for improved edge-to-edge image quality that will meet the strict requirements of professional and high-end amateur photographers. It features 3 high-precision aspherical lens elements, each of a different type: ground, replica and GMo for even better image quality than the original EF 16-35mm f/2.8L USM. The circular aperture produces a beautiful and natural background blur when shooting at wider apertures. Other features include internal focusing, a ring type USM (Ultra Sonic Monitor), and new AF algorithms for fast and quiet autofocusing.
 

• Ultra-wide zoom lens - 16 to 35mm focal range, fast f/2.8 aperture
• Higher image quality at wide-angle end, enhancing optical performance, resolution and contrast
• 2 UD and 3 types of aspherical elements reduce aberrations for outstanding image quality
• High level dust and moisture resistance - designed for use in harsh conditions
• Inner focus design with Ultrasonic Motor (USM) for fast and virtually silent operation
• Circular aperture producing attractive background defocus
• 28cm minimum focus distance at all zoom focal lengths
• Optimized lens coating, reduces ghosting and flare
• Manual focusing enabled even during AF mode (full time mechanical focusing)