Panasonic has introduced firmware updates for its Lumix S1RII, S1II and S1IIE cameras, improving the hybrid shooting experience and enhancing functionality, while also updating the LUMIX Flow app.


The Panasonic Lumix S1RII is one of three cameras that will benefit from the latest firmware updates. (Source: Panasonic.)

The new firmware will provide the following improvements:

  • Improved Thermal Control Algorithm for Longer Recording Time;
  • Addition of Lower-Speed Option for SH Burst Shooting;
  • Auto-recognition frames for just the main subject can now be set for display while using autofocus.
  • AF frame display for human eye recognition can be set to ‘rectangular’ while using autofocus.
  • Enhanced tracking AF stability through algorithm improvements.
  • The option for the low-bitrate video format “MP4(Lite)” delivering 3.8K (3840×2560) 29.97p/25.00p at 50Mbps can now be selected.
  • Compatibility with the LUMIX S 100-500mm F5-7.1 O.I.S. interchangeable lens (S-R100500) and teleconverter (DMW-STC14/STC20) has been improved.
  • An icon indicating that the preview effect is disabled will be displayed on the shooting screen when [Constant Preview] is set to [OFF].
  • ISO Auto can be set in the [ISO Displayed Setting] menu in the Custom Menu.
  • A bug where the live view quality differed between standby mode and video recording mode when applying false colour has been fixed.
  • A 1.6x display option for the Anamorphic Desqueeze Display has been added.
  • The base ISO sensitivity is now visible on the ISO sensitivity setting screen when Dual Native ISO is set to AUTO.
  • The default setting for functions registered to the sub video rec. button has been changed to “No Setting” in both Photo Mode and Playback Mode.
  • The processing time for focus stacking has been improved through algorithm enhancements.
  • A menu that displays the live view with the same quality during both standby and video recording modes has been added.

Support for LUMIX Smartphone App, LUMIX Flow Ver.1.4 enables the user to apply LUTs to live view on an external monitor, displaying multiple frame markers, and showing focus frames. Other functionality improvements and enhancements include: Support for LUT view assist – LUT live view is available in the app and can be toggled ON or OFF; support for multiple frame marker display – The same frame markers shown on the camera are output to the app as live view and improved AF frame display in Automatic Detection.

All updates will be available from November 27, 2025 via the LUMIX Global Customer Support website and app stores.