Thank you for purchasing and using our products.
We are pleased to announce that a new firmware update for SIGMA’s interchangeable lenses for Sony E-mount is now available.

[Applicable products]
SIGMA 14mm F1.8 DG HSM | Art for Sony E-mount
SIGMA 20mm F1.4 DG HSM | Art for Sony E-mount
SIGMA 24mm F1.4 DG HSM | Art for Sony E-mount
SIGMA 35mm F1.4 DG HSM | Art for Sony E-mount
SIGMA 50mm F1.4 DG HSM | Art for Sony E-mount
SIGMA 85mm F1.4 DG HSM | Art for Sony E-mount
SIGMA 135mm F1.8 DG HSM | Art for Sony E-mount

[Benefits of the update]
・It has improved the AF speed.
・It has improved the AF accuracy when the Face Detection setting is turned on, while using AF.
・With the Sony α9 or Sony α6400, it has corrected the phenomenon whereby the AF stopping position occasionally had a variation when shutter was half pressed repeatedly during auto focusing on the same subject.
※For customers who have Sony α9, please update the camera’s firmware to Ver.5.00 or later.

[Applicable product]
SIGMA 105mm F1.4 DG HSM | Art for Sony E-mount

[Benefits of the update]
・It has improved the AF accuracy when the Face Detection setting is turned on, while using AF.
・With the Sony α9 or Sony α6400, it has corrected the phenomenon whereby the AF stopping position occasionally had a variation when shutter was half pressed repeatedly during auto focusing on the same subject.
※For customers who have Sony α9, please update the camera’s firmware to Ver.5.00 or later.

[Applicable product]
SIGMA 40mm F1.4 DG HSM | Art for Sony E-mount

[Benefit of the update]
・With cameras which incorporate DMF mode, when using the AF while the MF assist function is turned on, it has corrected the phenomenon whereby it automatically displays a magnified view as it gets in focus.
※For customers who have Sony α9, please update the camera’s firmware to Ver.5.00 or later.

To update the firmware, please refer to the following link;
https://www.sigma-global.com/en/download/lenses/firmware/

※After completing the firmware update, please remove the battery pack from the camera and put it back in again.

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.