A fast, ultra wide-angle zoom lens offering excellent optical performance throughout the zoom range. A constant f/2.8 maximum aperture make this an ideal lens for low-light photography. Key benefits: A fast f/2.8 maximum aperture stays constant over the full focal-length range, meaning no variation in shutter speed will occur when zooming. A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode. A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background. The EF 16-35mm f/2.8L II USM incorporates three aspherical elements to ensure corner-to-corner sharpness and clarity throughout the focal range. Two UD (Ultra Low Dispersion) elements virtually eliminate chromatic aberrations. Super Spectra coatings ensure accurate colour balance and enhance contrast. They also reduce flare and ghosting - a common problem caused by light bouncing off a camera's sensor. Ensures optimal flash metering by passing distance information back to a compatible EOS camera's E-TTL II flash system. Includes a cylindrical bayonet hood and soft case. For use with EF mount Canon DSLR cameras
