The Canon RF 50mm f/1.8 STM is a sleek normal-length prime offering a classic, versatile field of view and an especially compact design. Also, an STM motor affords impressively quiet and smooth autofocus performance and full-time manual focus override. Additionally, a configurable Control Ring lets you adjust exposure settings, including ISO, aperture, and exposure compensation, from the lens itself. Bright f/1.8 maximum aperture suits working in difficult lighting conditions and also offers increased control over depth of field. Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.