Designed to take advantage of everything the RF mount has to offer, RF lenses represent a new frontier in lens design for mirrorless cameras. With a large 54mm lens mount, large diameter elements to match and placement closer to the image plane, RF lenses provide brilliant image quality edge-to-edge with minimal light fallout, enabling new possibilities for enhanced optics and compact designs. A supercharged 12 pin communication system optimizes data transfer between camera and lens for sharp, stable and responsive performance in a wide variety of applications.Delivering features and performance engineered to astound, RF optics herald a new day in Canons legacy of optical brilliance. A new frontier in lens design for mirrorless cameras! NEW LENS DESIGNS WITH STELLAR IMAGE QUALITY Control Ring All RF lenses incorporate a control ring on the lens barrel that can directly adjust numerous settings including shutter speed, aperture, exposure compensation and more. Located towards the front of the lens and effectively adding a third dial to the EOS R cameras main dial and quick control dial, the control ring has a tactile, easily distinguished surface and features a clicking mechanism that provides tangible feedback for confident use while looking through the viewfinder INNOVATIVE OPERABILITY Lens Information Display Another helpful feature, the EOS R camera can display lens information right in the viewfinder, making it easy to confirm the lenss focal length without looking away from the subject at hand. Lens Information Display RELIABLE IMAGE STABILIZATION TECHNOLOGY Optical Image Stabilization Select RF lenses feature optical image stabilization technology thats designed to work in conjunction with the EOS R camera. Both the camera and the lens share data to dramatically reduce camera-shake blur, regardless of the situation and whether shooting video or stills, to deliver impressively clear results. Optical Image Stabilization SMOOTH & QUIET NANO USM RF 24105mm F4 L IS USM The RF 24105mm F4 L IS USM is versatile with its broad zoom range and constant f/4 maximum aperture. Its the first L series lens to feature Canons fast and speedy NANO USM, making it ideal for landscapes, portraits and much more.