Sigma 24-105mm F4 DG OS HSM | Art (Canon EF mount)
firmware v2.01
Sigma · Released Jul 21, 2020 · First seen Jul 5, 2026
v2.01 is the latest firmware for the Sigma 24-105mm F4 DG OS HSM / Art (Canon EF mount), released July 21, 2020.
In short — summary by updatemystuff.com
Improved viewfinder exposure and Live View stability on specific Canon models, and enhanced autofocus performance with mount converters.
- Enhanced viewfinder exposure metering on EOS 90D and EOS-1D X Mark III
- Fixed intermittent communication issue in Live View on EOS-1D X Mark III
- Improved autofocus when used with SIGMA mount converters MC-11 EF-E and MC-21 EF-L
Written from Sigma's release notes, which are printed in full below.
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What's in this update
It has optimized the exposure when shooting with the viewfinder on the EOS 90D and EOS-1D X Mark III.It has corrected a rarely-occurring communication problem when shooting in Live View on the EOS-1D X Mark III.It has improved the AF performance when the lens is used in combination with the SIGMA MOUNT CONVERTER MC-11 EF-E or MC-21 EF-L.
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