Firmware update for SIGMA 120-300mm F2.8 DG OS HSM | Sports in SIGMA SA mount

Thank you for purchasing and using our products.

We would like to announce that a new firmware update is now available for SIGMA 120-300mm F2.8 DG OS HSM | Sports in SIGMA SA mount.

For customers who own the SIGMA USB DOCK UD-01 and the applicable product, please update the firmware via SIGMA Optimization Pro.

[Applicable product]
・SIGMA 120-300mm F2.8 DG OS HSM | Sports in SIGMA SA mount

[Benefits of the update]
・The firmware will optimize the operation of Mode2 in Optical Stabilizer when used in combination with the SIGMA MOUNT CONVERTER MC-21 SA-L.

[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.

【SIGMA Optimization Pro download page】

For further assistance please contact Sigma Imaging (UK) Ltd Service Department by email: or telephone: 01707 329 999

We appreciate your continued support for our company and products.