The RF 28-70mm F2 L USM is an incredibly bright L series zoom lens designed to bring unparalleled performance to Canon's EOS R full-frame mirrorless camera system. Stellar image quality is delivered from corner to corner thanks to the combination of a large 54mm diameter mount and short back focus distance. A rugged design and consistent f/2 brightness throughout its zoom range make the RF 28-70mm F2 L USM ideal for portraits, wedding photography, landscapes, nightscapes and more. It's made for photographers and moviemakers who want a bright view, sharp detail, gorgeous blur and the professional performance of Canon's L series.