The Sigma 12-24mm F4 DG HSM Art is a full-frame ultra-wide zoom for Canon EF mount featuring 16 elements in 11 groups with a constant F4 aperture across the entire range. It uses HSM autofocus and an 9-blade circular aperture, delivering rectilinear images even at 12mm. The lens belongs to Sigma's Global Vision Art line.
Product released: September 22, 2016
Latest firmware version
Version 2.01, released November 19, 2020
What's new in version 2.01
It has optimized exposure during viewfinder shooting when used in combination with Canon EOS 90D and EOS-1D X Mark III.It has fixed a rarely-occurring communication problem during Live View shooting when mounted on the EOS-1D X Mark III.