The Sigma 28mm F1.4 DG HSM Art is a full-frame wide-angle prime for Sigma SA mount featuring 18 elements in 14 groups and weather-sealing. It uses HSM autofocus and a 9-blade circular aperture. The lens belongs to Sigma's Global Vision Art line.
Product released: June 21, 2018
Latest firmware version
Version 1.01, released February 20, 2020
What's new in version 1.01
It has improved AF speed and quality used in combination with SIGMA MOUNT CONVERTER MC-21 SA-L.It has optimized the aperture control when used in combination with SIGMA MOUNT CONVERTER MC-21 SA-L.