The Sigma 50mm F1.4 DG HSM Art is a full-frame standard prime for Sigma SA mount featuring a redesigned optical formula with 13 elements in 8 groups. It uses HSM autofocus and a 9-blade circular diaphragm. The lens is part of Sigma's Global Vision Art line.
Product released: March 20, 2014
Latest firmware version
Version 1.02, released December 19, 2019
What's new in version 1.02
The firmware will improve the AF performance when used in combination with the SIGMA MOUNT CONVERTER MC-21 SA-L.