This SIGMA 30mm F1.4 DC HSM is a large-aperture standard lens with an angle of view equivalent to 45mm on a 35mm camera and is a superb go-to lens for artistic photography on an APS-C format digital SLR. Offering a bright F1.4 aperture and an angle of view extremely close to that of human vision, this lens is ideal for many different types of photographic expression. Featuring an advanced design and the latest manufacturing technologies, the SIGMA 30mm F1.4 DC HSM delivers the highest level of image quality worthy of SIGMA's Art line. The photographer can leverage the shallow depth of field that creates beautiful bokeh for portraits, landscapes, and many different styles of photography.