Sigma 20mm F1.4 DG HSM | Art (Canon EF mount)
firmware v2.01
Sigma · Released Oct 22, 2020 · First seen Jul 5, 2026
v2.01 is the latest firmware for the Sigma 20mm F1.4 DG HSM / Art (Canon EF mount), released October 22, 2020.
In short — summary by updatemystuff.com
Optimizes exposure for select Canon models and reduces diaphragm noise during video recording.
- Viewfinder exposure optimized for EOS 90D and EOS-1D X Mark III
- Diaphragm noise reduced during Canon movie recording
- Diaphragm noise reduced when using MC-11 converter for video
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 during viewfinder shooting when used in combination with the EOS 90D and the EOS-1D X Mark III.It has reduced the operating sound of the lens diaphragm blades when attached with the SIGMA MOUNT CONVERTER MC-11 EF-E and used for shooting movies.
It has reduced the operating sound of the lens diaphragm blades when used for shooting movies on Canon cameras.
- The degree of improvement differs depending on the camera used.
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