Firmware update for SIGMA 35mm F1.2 DG DN | Art for L-Mount
Benefits of the update:
・The lens has become compatible with focus ring adjustment functionality.
・Improved the quality of aperture operation and AF tracking in movie shooting.
・ It has improved AF performance when shooting a distant view
https://www.sigma-imaging-uk.com/firmware-update-for-sigma-35mm-f1-2-dg-dn-art-for-l-mount/