Sigma 35mm F1.4 DG HSM

This fast lens covers full-frame sensors and includes a Hyper Sonic Motor (HSM), a floating internal focusing system, and SLD and FLD glass elements, which help correct both axial and chromatic aberration. In all, the lens is constructed of 13 elements in 11 groups and has a 9-bladed diaphragm. The HSM delivers quiet, high-speed autofocusing while the floating focusing system allows for superior optical performance with subjects at a closer shooting distance (minimum focus: 30cm, 11.8″). The large f/1.4 maximum aperture makes it ideal in low light and the lens is compatible with the SIGMA USB dock and SIGMA Optimization Pro software to adjust and fine tune focusing parameters.