Sigma 100-400mm F5-6.3 DG DN OS | Contemporary (L-Mount)
firmware v1.3
Sigma · Released May 25, 2023 · First seen Jul 5, 2026
v1.3 is not the latest firmware for the Sigma 100-400mm F5-6.3 DG DN OS / Contemporary (L-Mount): the current version is v1.4 (May 22, 2025). Go to v1.4
What's in this update
Supports Leica Extender L 1.4x by Leica Camera AG
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See the full firmware history for the 100-400mm F5-6.3 DG DN OS | Contemporary (L-Mount)