Sigma 105mm F2.8 DG DN MACRO | Art (L-Mount)
firmware v1.5
Sigma · Released Jan 22, 2026 · First seen Jul 5, 2026
v1.5 is the latest firmware for the Sigma 105mm F2.8 DG DN MACRO / Art (L-Mount), released January 22, 2026.
In short — summary by updatemystuff.com
Improves manual focus handling, adds focus ring customization during AF, and enables T-stop display for video recording.
- Manual focus operability enhanced at close focusing distances
- Focus ring can be customized during autofocus
- T-stop display option added for video recording
Written from Sigma's release notes, which are printed in full below.
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What's in this update
- Improved manual focus operability near the minimum focusing distance.
- Added the ability to assign specific functions to the focus ring during AF.*
- Added the option to change the rotation direction of the focus ring during MF.*
- Added the option to display the aperture value as a T-stop during video recording.
- Only on supported cameras.
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