Sigma 50mm F1.4 DG HSM | Art (L-Mount)
firmware v1.1
Sigma · Released Mar 25, 2021 · First seen Jul 5, 2026
v1.1 is not the latest firmware for the Sigma 50mm F1.4 DG HSM / Art (L-Mount): the current version is v1.2 (July 24, 2025). Go to v1.2
In short — summary by updatemystuff.com
Improves autofocus accuracy and aperture operation, optimizes minimum focusing distance display.
- Increased autofocus precision when used with SIGMA fp L
- Better aperture control during video on Panasonic LUMIX S1H
- Corrected minimum focusing distance values shown on camera
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 accuracy when it is used with the SIGMA fp L.It has improved aperture operation when shooting movies with the Panasonic LUMIX S1H.It has optimized the value of the minimum focusing distance displayed on the camera.
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