Sigma 35mm F2 DG DN | Contemporary (L-Mount) firmware

Firmware history

1. Version 1.5 Latest Released Mar 18, 2026 First seen Jul 5, 2026

   Focus ring customization and T-stop display option added for video recording. — summary by updatemystuff.com

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   • Added the abi​lity 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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2. Version 1.4 Released Mar 13, 2025 First seen Jul 5, 2026
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   • The operation​al stabilit​y has been improved.
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3. Version 1.3 Released Nov 21, 2024 First seen Jul 5, 2026
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   • The exposure stability has been​ improved.
   • The operational stability has been improved when c​ontinuous shooting is performed in continuous AF (AF-C) mode.
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4. Version 1.2 Released Jan 20, 2022 First seen Jul 5, 2026

   Adds focus ring control compatibility, reduces AF drive sound, and improves shutter lag. — summary by updatemystuff.com

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   • It introduces compatib​ility with the “focus ring control” function of the camera, allowing either “linear” or “non-linear” focus movement to be selected 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.
   • SIGMA fp L will be supported by updating to firmware Ver.2.00 scheduled to be released in the near future, and SIGMA fp will be supported by updating to firmware which is scheduled to be released in April.
   • For mo​re information on linear and non-linear focusing, please refer to our frequently asked questions.
   • It reduces the AF drive sound.
   • 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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5. Version 1.1 Released Mar 25, 2021 First seen Jul 5, 2026
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   It has improved th​e AF accuracy when it is us​ed with the SIGMA fp L.

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