Sigma 50mm F1.4 DG HSM | Art (Sony E-mount)
firmware v02
Sigma · Released Jul 18, 2019 · First seen Jul 5, 2026
v02 is the latest firmware for the Sigma 50mm F1.4 DG HSM / Art (Sony E-mount), released July 18, 2019.
In short — summary by updatemystuff.com
This release improves autofocus speed and accuracy, plus corrects focus positioning variation on specific Sony models.
- Faster autofocus
- Improved AF accuracy with face detection enabled
- Fixed AF positioning variation on Sony α9 and α6400
Written from Sigma's release notes, which are printed in full below.
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What's in this 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.
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