The new SIGMA 35mm F1.4 DG DN | Art is designed exclusively for mirrorless cameras, with a lightweight, compact form, premium construction, and outstanding optical quality. An evolution of a true classic, the new 35mm F1.4 DG DN | A updates SIGMA's most popular Art prime to bring an unprecedented level of image quality to E-mount and L-mount camera systems.Compared to conventional models, the new 35mm F1.4 DG DN | Art offers improved optical performance, with minimal aberrations and exceptional sharpness from edge to edge, even at F1.4. A streamlined focusing system, featuring a stepping-type motor and a single focusing element, provide quick, smooth, accurate autofocus response while reducing the overall size and weight of the lens.The new 35mm F1.4 DG DN | Art also offers a variety of convenient, practical features for demanding users. On-lens controls include a focus mode switch, AFL button, aperture ring, aperture ring click switch, and an aperture ring lock. In addition, the entire lens body incorporates a dust and splash-proof structure for peace of mind in inclement conditions.