The Sigma 30mm f/1.4 EX DC HSM is a large aperture lens that provides a standard angle most similar to the human eye. The 30mm focal length translates to approximately 50mm in 35mm format.
A glass mold aspherical lens element at the rear group of the lens reduces color aberration and provides high-quality image results. From 15.7" (40 cm) minimum focusing distance to infinity, this lens creates very sharp images with high contrast, and performs well in a great range of applications, including snapshots, portraiture, indoor shooting and landscape photography.
Note: Not suitable for 35mm film SLR cameras or for any full-frame digital SLR camera.