The Sigma 40mm F1.4 DG HSM Art is a full-frame prime for Sigma SA mount featuring 18 elements in 15 groups with Nano Porous Coating, designed for cinematic rendering at F1.4. It uses HSM autofocus and a 9-blade circular aperture. The lens belongs to Sigma's Global Vision Art line.
Product released: September 27, 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 when used in combination with SIGMA MOUNT CONVERTER MC-21 SA-L.