Canon EF 50mm f/1.8 STM Standard Prime LensThe Canon EF 50mm f 1. 8 STM Standard Prime Lens is compact, lightweight fixed focal length lens that is ideal for everyday photos. With a large f 1. 8 aperture, it makes for a perfect lens in low light situations and to produce creative background blur. It's optimal for everything from portraits to fast moving subjects like children and pets. Continuous autofocus is super smooth and quiet, thanks to Canon's gear type stepping motor. That means you