The Leica SL3-S is a full-frame mirrorless camera in the SL system with a 24MP sensor optimized for video, supporting 8K internal recording and advanced autofocus. It is a video-focused variant of the SL3 aimed at hybrid photographers and cinematographers.
Product released: January 21, 2025
Latest firmware version
Version 4.0.1
Verified by LatestUpdate: June 18, 2026
What's new in version 4.0.1
IMPROVEMENT
• When the focus mode was set manually (MF) in video mode,
autofocus was not available via the joystick. AF activation via the
joystick is now possible again.
• An error in bulb mode has been corrected, whereby a long expo-
sure that could not be canceled was started after delayed activa-
tion of the first and second pressure points of the shutter release.
Bulb mode now works correctly.
The Leica SL3-S is a full-frame mirrorless camera in the SL system with a 24MP sensor optimized for video, supporting 8K internal recording and advanced autofocus. It is a video-focused variant of the SL3 aimed at hybrid photographers and cinematographers. It was originally released on January 21, 2025.
What is the latest firmware version for the Leica SL3-S?
The latest firmware version for the Leica SL3-S is 4.0.1.
What changed in Leica SL3-S firmware version 4.0.1?
Leica SL3-S firmware version 4.0.1 includes the following changes: IMPROVEMENT
• When the focus mode was set manually (MF) in video mode,
autofocus was not available via the joystick. AF activation via the
joystick is now possible again.
• An error in bulb mode has been corrected, whereby a long expo-
sure that could not be canceled was started after delayed activa-
tion of the first and second pressure points of the shutter release.
Bulb mode now works correctly.
How do I update the Leica SL3-S firmware?
To update the Leica SL3-S firmware, download the latest version (4.0.1) from Leica's website. Follow Leica's installation instructions, which typically involve copying the firmware file to a memory card or connecting via USB. You can download the latest firmware from Leica's support page.
Where can I download the latest Leica SL3-S firmware?
Details and download instructions for the latest Leica SL3-S firmware (version 4.0.1) are on Leica's official release page: https://leica-camera.com/en-int/photography/cameras/sl/sl3-s-black/downloads
How do I check for Leica SL3-S firmware updates?
You can track Leica SL3-S firmware updates automatically on LatestUpdate.io. We monitor Leica's releases and notify you when new firmware versions are available, so you never miss an update.
How often does Leica release firmware updates for the Leica SL3-S?
We have tracked 2 firmware versions for the Leica SL3-S. Leica releases updates to fix bugs, improve performance, and add new features. Track this product on LatestUpdate.io to be notified of future releases.
Who makes the Leica SL3-S?
The Leica SL3-S is manufactured by Leica. Visit the official product page for more information.