Sigma's Art-line 24-70mm f/2.8 for mirrorless — optically outstanding and lighter than first-party rivals.
The Sigma 24-70mm f/2.8 DG DN Art launched in 2019 as a native mirrorless redesign of the standard zoom workhorse, available for Sony FE and L-Mount. It brought Sigma's Art-line optical quality to the constant f/2.8 standard zoom category at a significantly lower price than Sony or Panasonic equivalents.
Optically excellent — sharp across the frame at every focal length with impressively low distortion and chromatic aberration. Competes directly with the Sony 24-70mm f/2.8 GM in optical tests. AF is fast and quiet using a stepping motor system optimised for mirrorless bodies.
Available in Sony FE and L-Mount. 82mm filter thread. Weighs 830g. Weather-sealed dust and splash resistant construction. Minimum focus distance 18cm at 24mm — impressive close-up capability. AF/MF switch and AFL button on barrel. USB-C dock compatible.
Common used and good value compared to first-party equivalents. The Sony GM II is lighter and has better AF but costs significantly more. Check for firmware updates via USB-C dock. One of the best value professional standard zooms for Sony and L-Mount mirrorless systems.