Sigma 40mm F1.4 DG HSM | Art (L-Mount)
firmware v1.1
Sigma · Released May 20, 2021 · First seen Jul 5, 2026
v1.1 is not the latest firmware for the Sigma 40mm F1.4 DG HSM / Art (L-Mount): the current version is v1.2 (October 23, 2025). Go to v1.2
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.
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See the full firmware history for the 40mm F1.4 DG HSM | Art (L-Mount)