World's first large-aperture full frame standard zoom, with f2 brightness throughout the focal range
Canon press release excerpt, 5 September 2018
A fast-aperture, versatile, standard zoom lens, the RF 28-70mm f2L USM offers new levels of creativity as it becomes the world’s first large-aperture full frame compatible standard zoom, offering f/2 brightness throughout the zoom range. Furthermore, the lens barrel has a shock absorbing mechanism that achieves excellent impact resistance for toughness, and durability.
As a newly introduced feature for all RF lenses, all will feature a customisable Control Ring that users can use to adjust aperture, shutter speed, ISO or exposure compensation – which means there is no need to look away from the subject and risk breaking concentration - as well as intuitive ergonomics for a natural shooting experience.
Cutting-edge optics
The RF lens mount enables a radical new optical design – the 20mm flange back and wide 54mm mount diameter has made it possible for Canon engineers to design new lenses that weren’t possible before. With lenses remaining at the foundation of the EOS System – Canon today also launches four new EOS R lenses, which expand the possibilities of optical excellence.