Sigma 24-70mm F2.8 DG OS HSM | Art (Canon EF mount)
firmware v2.03
Sigma · Released Mar 14, 2019 · First seen Jul 5, 2026
v2.03 is not the latest firmware for the Sigma 24-70mm F2.8 DG OS HSM / Art (Canon EF mount): the current version is v2.05 (April 23, 2020). Go to v2.05
In short — summary by updatemystuff.com
Fixed camera restart, autofocus, and exposure issues when used with Canon EOS R and mount adapters.
- Camera restart failure when removing lens with optical stabilization
- Autofocus stalling during video recording
- Intermittent overexposure when stopping down aperture beyond F8
Written from Sigma's release notes, which are printed in full below.
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What's in this update
When the lens is used in combination with the Canon “EOS R” and their “Mount Adapter EF-EOS R”, or “Control Ring Mount Adapter EF-EOS R”, it has corrected the phenomenon whereby restarting the camera does not work when the lens is taken off the camera while the lens’s OS function is in operation.
When the lens is used in combination with the Canon “EOS R” and their “Mount Adapter EF-EOS R”, or “Control Ring Mount Adapter EF-EOS R”, it has corrected the phenomenon whereby it may stop the focus driving from infinity to closer focus distance while shooting video with AF.When the lens is used in combination with the Canon “EOS R” and their “Mount Adapter EF-EOS R”, or “Control Ring Mount Adapter EF-EOS R”, it has corrected the phenomenon whereby it may occasionally show overexposure when narrowing down the aperture from F8 while shooting.
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