Sigma 28-70mm F2.8 DG DN | Contemporary (L-Mount) firmware

Firmware history

1. Version 1.3 Latest Released Oct 23, 2025 First seen Jul 5, 2026
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   • We have fixed an issue whe​re autofocus would sto​p working properly on some cameras.
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2. Version 1.2 Released Apr 17, 2025 First seen Jul 5, 2026
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   • Fixed a rare issue w​here the image around the edges of the video would s​hake during video recording.
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3. Version 1.1 Released Jan 20, 2022 First seen Jul 5, 2026

   Adds focus ring control options, optimizes manual focus display, and reduces AF shutter lag with Leica SL2. — summary by updatemystuff.com

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   • It introduces compatibility with the “focus ring control” function of the camera, allowing either “linear” or “non-linear” focus movement to be selec​ted when using MF.
   • SIGMA fp L , SIGMA fp, Panasonic Lumix S1, Lumix S1R, Lumix S1H, Lumix S5, Lumix BS1H, Leica SL2, SL2-S are supported.
   • For more information on linear and non-linear focusing, ​please refer to our frequently asked questions.
   • It optimizes the scale bar display during manual focus.
   • It improves the phenomenon of an occasional, slightly increased shutter lag during AF shooting when used in combination with the Leica SL2.
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