The versatile f/1.4 EX DC HSM can be used for a wide range of applications from snapshots, Portraiture, and indoor shooting to Landscape photography. This Sigma 30mm has been designed for professional use. Get outstanding optical performance with this Sigma 30mm — a high quality prime lens. Handheld shooting in dim light is now possible as this Sigma lens for Canon is a large aperture standard lens for digital cameras with a fast 1.4 aperture. In this Sigma lens for Canon, flare is well-controlled, along with a good contrast. The hypersonic motor (HSM) of the f/1.4 EX DC HSM quickly and quietly provides accurate internal autofocus.