Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE | Art (L-Mount)
firmware v1.2
Sigma · Released Jan 22, 2026 · First seen Jul 5, 2026
v1.2 is the latest firmware for the Sigma 15mm F1.4 DG DN DIAGONAL FISHEYE / Art (L-Mount), released January 22, 2026.
In short — summary by updatemystuff.com
Added customizable focus ring and T-stop display option for supported cameras.
- Assign custom functions to focus ring during autofocus
- Reverse focus ring rotation direction during manual focus
- Display aperture as T-stop during video recording
Written from Sigma's release notes, which are printed in full below.
Was this useful? Thanks.
What's in this update
- 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.
updatemystuff.com never hosts firmware files — always download from the official source.
Get it from SigmaWatch the 15mm F1.4 DG DN DIAGONAL FISHEYE | Art (L-Mount) for updates
Create a free account and get an email the moment Sigma publishes new firmware.
Create account & watchOther versions for this product
See the full firmware history for the 15mm F1.4 DG DN DIAGONAL FISHEYE | Art (L-Mount)