This is a Geek Squad Certified Open Box Product. See below for more information. Capture the finer details in your photos or videos with the Canon RF 50mm f/1.8 STM lens. This fixed focal lens with f/1.8 maximum aperture lets you capture a wide range of scenes even in low light conditions. Its stepping motor (Gear-Type STM) ensures smooth and quiet operation, while the Super Spectra coating reduces ghosting and flares.