Sigma 135mm F1.8 DG HSM | Art (Canon EF mount)
firmware v2.02
Sigma · Released Apr 18, 2019 · First seen Jul 5, 2026
v2.02 is not the latest firmware for the Sigma 135mm F1.8 DG HSM / Art (Canon EF mount): the current version is v2.03 (December 17, 2020). Go to v2.03
In short — summary by updatemystuff.com
Fixed overexposure issue when narrowing aperture on Canon EOS R with mount adapter.
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 it may occasionally show overexposure when narrowing down the aperture from F3.5 while shooting.
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See the full firmware history for the 135mm F1.8 DG HSM | Art (Canon EF mount)