Canon RF 28-70mm f/2.0L USM LensCanon RF 28 70mm f 2. 0L USM Lens Setting new standards a fast, versatile, ultra high quality zoom for the Canon EOS R System. Redefining what can be expected of a standard zoom lens, the RF 28 70mm f 2 L USM features a fast f 2 aperture and delivers new levels of image quality. Features: Redefine what you expect from a standard zoom lens Super fast f 2 aperture design for extra creative power Smooth, near silent autofocusing, with Canons USM