EF 16-35mm f/4 L IS USM

The Canon EF 16-35mm f/4L IS USM is a premium wide-angle zoom lens designed for Canon EF-mount full-frame DSLRs and APS-C models. This L-series lens features a constant f/4 maximum aperture, four-stop effective image stabilization system, and sophisticated optical construction that includes two ultra-low dispersion elements and three aspherical elements to minimize chromatic aberrations, distortion, and spherical aberrations. The ring-type ultrasonic motor provides fast and quiet autofocus with full-time manual focus override, while weather-sealing and a protective fluorine coating on exposed elements enable reliable performance in challenging environmental conditions. Super Spectra coatings suppress flare and ghosting for improved contrast, and the nine-blade rounded diaphragm contributes to a pleasing bokeh quality for shallow depth of field applications.