A versatile telephoto-zoom with a portable form factor, the Canon RF 100-400mm f/5.6-8 IS USM is a nimble lens perfect for wildlife, sports, and travel shooting. With extended range, this zoom packs super-telephoto reach into a relatively sleek, lightweight design along with support for Coordinated IS to help control up to 6 stops of camera shake and Nano USM AF to promote faster focusing performance. RF-Mount Lens/Full-Frame Format Aperture Range: f/5.6 to f/45 One UD Element, One Aspherical Element Super Spectra Coating Nano USM AF Motor Maximum Magnification: 0.41x at 400mm Optical Image Stabilizer Customizable Control Ring Rounded 9-Blade Diaphragm