Sony E users get Sigma's 20mm F1.4 DG HSM Art as a 1,015g, 155.8mm-long full-frame ultra-wide. Sigma describes it as the world's first 20mm F1.4 lens, made possible by a 59mm double aspherical element within its 15-element, 11-group layout. The angle of view is 94.5°, the minimum focusing distance is 27.6cm, and autofocus uses an HSM motor.
Product released: September 1, 2018
Latest firmware version
Version 02, released July 18, 2019
Last checked for updates: Oct 31, 2026 17:40 UTC
What's new in version 02
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.
Sony E users get Sigma's 20mm F1.4 DG HSM Art as a 1,015g, 155.8mm-long full-frame ultra-wide. Sigma describes it as the world's first 20mm F1.4 lens, made possible by a 59mm double aspherical element within its 15-element, 11-group layout. The angle of view is 94.5°, the minimum focusing distance is 27.6cm, and autofocus uses an HSM motor. It was originally released on September 1, 2018.
What is the latest firmware version of Sigma 20mm F1.4 DG HSM Art (Sony E)?
The latest firmware version of Sigma 20mm F1.4 DG HSM Art (Sony E) is 02. It was released on July 18, 2019.
What changed in Sigma 20mm F1.4 DG HSM Art (Sony E) firmware version 02?
Sigma 20mm F1.4 DG HSM Art (Sony E) firmware version 02 includes the following changes: 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.
Where can I download the latest Sigma 20mm F1.4 DG HSM Art (Sony E) firmware?
Details and download instructions for the latest Sigma 20mm F1.4 DG HSM Art (Sony E) firmware (version 02) are on Sigma's official release page: https://www.sigma-global.com/en/support/firmware/a015_20_14/?mount=sony-e