Pairing a medium-telephoto focal length with an extremely bright maximum aperture, the Canon RF 135mm f/1.8L IS USM Lens offers an engaging mixture of high sharpness and shallow depth of field, making it an ideal choice for portrait subjects. Benefitting this desirable combination is an advanced L-series optical design, robust and weather-sealed construction, and fast AF along with dependable image stabilization for intuitive use. Impressively bright f/1.8 maximum aperture affords extensive control over depth of field for selective focus applications and also benefits working in low-light situations. Three ultra-low dispersion elements control a variety of aberrations in order to achieve high sharpness, clarity, and accurate colour rendering. Both Air Sphere and Super Spectra Coatings improve image quality by maintaining high contrast and colour accuracy while reducing lens flare and ghosting when working in strong lighting conditions. Rounded nine-blade diaphragm contributes to a pleasing bokeh quality. Nano USM delivers fast, accurate, and near silent autofocus performance to benefit both photo and video applications. Customizable Lens Function buttons on the barrel permit intuitive tactile control and rapid access to shooting settings. Benefitting handheld and monopod-based shooting, Optical Image Stabilization compensates for 5.5 stops of camera shake, or up to 8 stops if paired with in-body image stabilization, for sharper imagery. Weather-sealed design for reliable use in inclement conditions. Fluorine coating on front element helps repel moisture, dust, and fingerprints and is also easier to clean. Configurable Control Ring can be used to adjust a variety of exposure settings, including aperture, ISO, and exposure compensation. {Key Features} - RF-Mount Lens/Full-Frame Format - Aperture Range: f/1.8 to f/22 - Nano USM AF System - Optical Image Stabilizer - Ultra-Low Dispersion Elements - Air Sphere Coating - Lens Function Buttons and Control Ring - Rounded 9-Blade Diaphragm {Box Contents} - Canon RF 135mm f/1.8 L IS USM Lens - Canon E-82 II 82mm Lens Cap - Canon Lens Dust Cap RF - Canon ET-88B Lens Hood - Canon Lens Case LP1319