The Tamron 17-35mm F2.8-F4 Di OSD is a versatile wide-angle zoom lens designed for full-frame Canon EF-mount cameras. This compact, lightweight lens features a bright f/2.8 maximum aperture at the wide end, making it ideal for landscapes, architecture, and challenging lighting conditions. The 15-element optical design includes Tamron's Broad-Band Anti-Reflection Coating to minimise reflections and flare, whilst the front lens element is treated with fluorine coating for easy cleaning. An Optimized Silent Drive autofocus motor delivers quick and quiet focusing, and the lens is weather-sealed against moisture along the barrel for added durability. With its 77mm filter thread and minimum focus distance of 28cm, this lens offers exceptional value for photographers seeking a premium wide-angle zoom solution.