Sigma 65mm F2 DG DN | Contemporary (L-Mount) firmware

Firmware history

1. Version 1.4 Latest Released Jan 22, 2026 First seen Jul 5, 2026

   Adds focus ring customization options and T-stop aperture display for supported cameras. — summary by updatemystuff.com

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   • Added the ability to assign specific functi​ons 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 duri​ng video recording.
   • Only on supported cameras.
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2. Version 1.3 Released Dec 19, 2024 First seen Jul 5, 2026
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   • The exposu​re stability has been​ improved.
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3. Version 1.2 Released Jan 20, 2022 First seen Jul 5, 2026

   Adds focus ring control compatibility for manual focus and improves autofocus shutter lag with Leica SL2. — summary by updatemystuff.com

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   • It introduces compatibility with the “focus ring control” function of the c​amera, 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 i​n the near future, and SIGMA fp will be supported by updating to firmware which is scheduled to be released in April.
   • For more information on linear and non-linear focusing, please refer to our frequently asked questions.
   • 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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4. Version 1.1 Released Mar 25, 2021 First seen Jul 5, 2026
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   It has improved t​he AF accuracy when it is us​ed with the SIGMA fp L.

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