The EF 50mm f/1.8 STM Lens from Canon is a versatile, standard prime lens. Utilizing a STM stepping motor, this lens is ideal for both still and video shooting due to its speedy and smooth operation. Further benefitting video shooters, the STM motor also supports the Movie Servo AF mode on select DSLRs for precise and near-silent focusing. An updated exterior design includes a metal lens mount and a re-located focusing ring in order to accommodate the compact overall form factor. The optical design of this lens incorporates optimized coatings to reduce flare and ghosting for increased contrast and accurate colour. The f/1.8 maximum aperture is effective for low-light shooting as well as for controlling your focus plane for selective focus shooting. Seven rounded diaphragm blades create pleasingly circular bokeh, making it well-suited to portraiture and creative environmental shooting.