Thank you for purchasing and using our products.

We would like to announce that a new firmware update for interchangeable lenses for SIGMA SA mount listed below is now available.

For customers who own the SIGMA USB DOCK and applicable products listed below, please update the firmware via SIGMA Optimization Pro※.

※ Before updating the firmware using the SIGMA USB DOCK, please ensure to update SIGMA Optimization Pro to Windows Ver. 1.5.0. or later / Macintosh Ver 1.5.1 or later.

[Applicable product]
SIGMA 28mm F1.4 DG HSM | Art for SIGMA SA mount

[Benefits of the update]

・ It has improved AF speed and quality used in combination with SIGMA MOUNT CONVERTER MC-21 SA-L.
・It has optimized the aperture control when used in combination with SIGMA MOUNT CONVERTER MC-21 SA-L.

[Applicable product]
SIGMA 40mm F1.4 DG HSM | Art for SIGMA SA mount
SIGMA 70mm F2.8 DG MACRO | Art for SIGMA SA mount
SIGMA 105mm F1.4 DG HSM | Art for SIGMA SA mount

[Benefits of the update]
・ It has improved AF speed and quality when used in combination with SIGMA MOUNT CONVERTER MC-21 SA-L.

【SIGMA Optimization Pro Download page】
https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/

For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
https://www.sigma-global.com/en/about/world-network/

We appreciate your continued support for our company and products.