Sports 120-300mm F2.8 DG OS HSM firmware v1.02
Sigma · Released Dec 17, 2020 · First seen by GearPulse Jul 4, 2026
What's in this update
The firmware will optimize the operation of Mode2 in Optical Stabilizer when used in combination with the SIGMA MOUNT CONVERTER MC-21 SA-L.
GearPulse never hosts firmware files — always download from the official source.
Get it from Sigma →