Including a lens hood, metal lens mount, large manual focus ring, and refined A/MF autofocus switch, Sigma’s latest 24mm is built with the professional photographer in mind.Sigma 24mm f/1.4 DG HSM specification: Fast f/1.4 aperture and Sigma HSM autofocus motorSigma has a good track record for delivering first-class wide-angle lenses with its APS-C format 10-20mm f/3.5 or full frame 35mm f/1.4 DG HSM both securing a great reputation among enthusiasts and professional photographers alike. It comes as no surprise then that Sigma has announced a new wide-angle in its latest Art, or A, range of optics, this