Contemporary 17-70mm F2.8-4 DC MACRO OS HSM firmware v2.03
Sigma · Released Oct 21, 2021 · First seen by GearPulse Jul 4, 2026
What's in this update
It has corrected the phenomenon that the degree of image blur becomes bigger, when the image stabilizing system on the camera body is used.
GearPulse never hosts firmware files — always download from the official source.
Get it from Sigma →