The Canon RF 28-70mm F2L USM is a super-fast zoom lens for the company's full-frame mirrorless system. This durable, weather-sealed lens features UD lens elements as well as Air Sphere, Super Spectra and fluorine coatings. It has a nine-blade aperture, 39cm (15") minimum focus distance and uses 95mm filters. There's also a customizable control ring that can serve a variety of purposes