The EF 16-35mm f/4L IS USM is an ultra-wide-angle lens producing stunning clarity in a range of focal lengths. The zoom range combines a fixed f/4 aperture with excellent optical performance, making it ideal for landscapes, architectural shots and photojournalism – delivering sharp and expansive images with little distortion. The 4-stop Optical Image Stabilizer reduces camera shake for faster, sharper images, even in low-light and the in-built Ultra-Sonic Motor (USM) drives fast and quiet Auto Focus with optional full manual override. Part of the Canon professional L-series flagship range, its designed for robust handling and resistant to dust and moisture.