Thank you for purchasing and using our products.

We would like to announce that a new firmware update is now available for SIGMA Global Vision lens in Canon EF mount listed below.

If you own the SIGMA USB Dock UD-01 and applicable products listed below, please update the firmware via SIGMA Optimization Pro.

Applicable product

• SIGMA 28mm F1.4 DG HSM | Art in Canon EF-mount

• SIGMA 70mm F2.8 DG Macro | Art in Canon EF-mount

• SIGMA 85mm F1.4 DG HSM | Art in Canon EF-mount

• SIGMA 135mm F1.8 DG HSM | Art in Canon EF-mount

Benefits of the update

• It has optimized the exposure during viewfinder shooting when used in combination with the EOS 90D and the EOS-1D X Mark III.

Applicable product

• SIGMA 30mm F1.4 DC HSM | Art in Canon EF-mount

Benefits of the update

• It has optimized the exposure during viewfinder shooting when used in combination with the EOS 90D.

How to update
Connect the lens to a computer via the SIGMA USB Dock UD-01 (sold separately), then open SIGMA Optimization Pro*. If the lens firmware isn’t the latest version, the following message will appear: ‘The latest lens firmware is available’. Click ‘Yes’ to update.

*Before updating lens firmware using the SIGMA USB DOCK UD-01, please ensure you update SIGMA Optimization Pro to the latest version.

Download SIGMA Optimization Pro here


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