The Sigma 12-24mm F/4 DG HSM | Art Lens is an ultra-wide-angle zoom lens that is perfect for ultra-high resolution, full frame cameras. It offers an optimal package of centre-to-edge image quality, minimized distortion, and minimum focusing distance. To achieve these qualities without compromise, SIGMA has leveraged its lens design expertise and all of its leading-edge technologies. Advanced materials such as low-dispersion glass play a crucial role, while SIGMA’s advanced lens processing methods have made possible an aspherical lens of extremely large diameter.