Designed to be used with a wide range of full-frame format Nikon F-mount cameras, the Sigma 85 mm f/1.4 DG HSM Art Lens is an advanced tool that is capable of delivering high performance. It features a Hyper Sonic AF motor that provides a fast, accurate focus, and has a large focusing ring to perform manual focusing for a flexible photography experience. The fast f/1.4 aperture is ideal for working in low-light conditions and provides precise control over the focus position while using shallow field depth techniques. Use the rounded 9-blade diaphragm for providing your pictures with an attractive out-of-focus quality. Made from a Thermally Stable Composite (TSC) material and other regular metals, this lens delivers brilliant precision even when used at various temperatures.