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#                                     PROTON 4K Release Notes                                     #
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Latest Release:

Package 7 - 24-Feb-2026
-----------------------

Includes:

- Software (PROTON OS)       v1.7.0
- Firmware (Video Processor) v1.15
- PROTON Updater             v1.2.9.0
- PROTON Control             v1.5.0.0

Changes:

- Improved black level measurement to improve image quality especially in low-light scenarios.
- Reference Manual: Added maximum command runtime for commands which can run longer than 100 ms.
- Added automatic gain mode switching between Standard and Low-Light mode: With the new "Auto" gain
  mode the camera will automatically select the gain mode depending on the current gain setting. It
  will use the "Standard" gain mode for low gain settings and the "Low-Light" mode for high gain
  settings. This makes the whole gain range available without manually changing modes. The threshold
  for the switch between the modes must be calibrated for each camera to make the "Auto" mode
  available. This can be done by running the 'camera gain mode auto calibrate' command. The current
  calibration state can be queried with the 'camera gain mode auto' command. For details see the
  reference manual.
- Fixed current gain, exposure or iris position not being saved when switching auto exposure mode
  and saving settings afterwards.
- Bad pixel calibration is now always done at the default video mode for more consistent results.
  After calibration is done the previously configured video mode is restored automatically.
- Improved auto white balance: The AWB algorithm now also controls the tint value to improve the
  green balance. This means that when AWB is enabled the tint can no longer be set manually (but it
  can be read). Instead the AWB tint can now be fine tuned with the new "video wb auto tint_offset"
  command.
- Improved color calibration for better color reproduction.
- ZOOM:
  - Fixed an issue where lens drive initialization at startup could fail.
  - Fixed a regression from release v1.5.1 which caused the lens drive to loose focus when
    driving the zoom at high speeds. Now the intended behavior is restored and the zoom speed is
    limited to always have sharp focus.
  - The 'lens iris' command now also returns the actual iris position when the auto exposure is
    in auto-iris mode (until now it returned the value which was last set by the user). Also trying
    to set the iris in auto-iris mode now return an error (like gain and exposure when AEC is on).
- 3D:
  - Synchronization is now faster and the resulting offset in ppb can be checked with the new
    'system sync offset' command. To further speed up the synchronization process the current
    offset can be made permanent with the new 'system sync calibrate' command. See reference manual
    for more details.
  - Fixed an issue here changing the video mode could fail on the slave camera.

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Previous Releases:

Package 6 - 13-Nov-2025
-----------------------

Includes:

- Software (PROTON OS)       v1.6.1
- Firmware (Video Processor) v1.12
- PROTON Updater             v1.2.7.2
- PROTON Control             v1.4.3.1

Changes:

- Clock tuning with the 'system sdi clock_tune' command has been improved so that it now always
  runs in constant time (instead of taking longer for bigger offsets). As a downside this requires
  a pipeline restart when the clock tuning is changed. This change does reset a previously
  configured clock tuning to 0 so if the camera was calibrated make sure to backup the previous
  value and set it again after the update.
- Fixed documentation regarding auto exposure speed, the range is [0, 100] not [1, 100].
- Fixed auto exposure showing visible jumps in image brightness in some situations.
- Fixed color bar test pattern for interlaced video output.
- Fixed left and right audio channels being swapped in some cases.
- Improved black gamma documentation, reference manual now has a diagram explaining the effect.
- Changed naming scheme for 4K cameras, the 4K is now always put first, e.g. "PROTON FLEX 4K" is
  now "PROTON 4K FLEX".

Package 5 - 19-Sep-2025
------------------------

Includes:

- Software (PROTON OS)       v1.5.1
- Firmware (Video Processor) v1.10
- PROTON Updater             v1.2.7.1
- PROTON Control             v1.4.2.0

Changes:

- Added support for PROTON 4K ZOOM.
- Changed internal storage of the exposure time. This means stored exposure time settings will be
  reset to the default value (maximum exposure) after installing this update.
- Fixed clock configuration errors which could occur on some devices causing them to boot with no
  image output and a red blinking LED.
- Improved error detection and logging.
- Added new 'system sdi' command group which contains the 'amplitude' and 'slew_rate' commands
  which can be used to tune the SDI output signal to increase compatibility with different cable
  lengths and SDI receivers.
- Moved 'system clock_tune' command to the new 'system sdi' group, so the new syntax is 'system sdi
  clock_tune'. Also changing the clock offset is now more robust.
- The 'system audio volume' and 'system audio bias' commands now dump the settings for all inputs
  when they are called without arguments.

Package 4 - 21-Jul-2025
-----------------------

Includes:

- Software (PROTON OS)       v1.5.0
- Firmware (Video Processor) v1.10
- PROTON Updater             v1.2.6.0
- PROTON Control             v1.3.2.0

Changes:

- Added support for PROTON 3D 4K stereo camera rigs with internal clock synchronization.
- Improved clock calibration. Manual clock tuning should no longer be required, except very high
  clock precision is needed.
  Note: This firmware does reset any clock tuning settings which have previously been done since
  the system is now tuned by default. If you see issues in your application please tune clocks
  again using the 'system clock_tune' command.
- Improved white balance calibration which results in better color reproduction.
- Fixed settings being reset if the camera fails to start three times. This was intended as a
  recovery mechanism but caused issues with battery powered cameras as a low battery could also
  result in the camera not booting properly and settings being reset. The camera still enters a
  save mode after three failed boot attempts, the user can than manually decide to reset settings
  via the normal 'settings reset' command or power cycle the camera to leave the save mode.
- Added a configurable RS485 Tx delay. If set with the 'system rs485 tx_delay' command any command
  output will be guaranteed to happen after at least the configured delay has elapsed. This can be
  used to adjust for slow host devices which take a long time for the Tx to Rx switch.
- Fixed an issue where installing firmware updates with multiple devices on the same RS485
  interface would require a manual reboot or power cycle of the other attached devices before
  they could get updated as well (e.g after installing the update on camera A, camera B would
  not be updatable until it was rebooted).
- Improved defect pixel calibration. It now takes up to 30 seconds but is more reliable at
  detecting blinker pixels. Also fixed a rare issue where the system could end up in a bootloop
  after running the defect pixel calibration if horizontal and/or vertical flip were enabled.

Package 3 - 22-Apr-2025
-----------------------

Includes:

- Software (PROTON OS)       v1.4.2
- Firmware (Video Processor) v1.7
- PROTON Updater             v1.2.4.0
- PROTON Control             v1.2.0.0

Changes:

- Added 'system clock_tune' command which can be used to calibrate the SDI clock source to adjust
  for fabrication and age related clock offsets.
- Added 'system ping' command which can be used to check if a device is available.
- Fixed automatic command completion not working for some commands.

Package 2 - 18-Feb-2025
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Includes:

- Software (PROTON OS)       v1.4.0
- Firmware (Video Processor) v1.7
- PROTON Updater             v1.2.2.0
- PROTON Control             v1.2.0.0

Changes:

- Improved knee function: Previously the knee point was only correct when using the default REC.709
  gamma curve, now it is correct for all gamma LUT settings. Also the point is internally adjusted
  when the gamma curve is changed. This ensures that from a user perspective the knee point is kept
  constant, e.g. when looking at a wave monitor.
- Moved 'camera gain_mode' command to 'camera gain mode' command (it is now a subcommand of the
  'camera gain' command). This does break the previous API but is much more in line with our naming
  scheme.
- Added new 'video test pattern' command which can be used to show a test pattern instead of live
  video output.
- Added new 'video mcc gate' command which can be used to desaturate (gate) selected phases which
  makes image tuning with a vector scope easier.
- MCC gating and blinking are now turned off when MCC enable is toggled (so turning off the MCC
  always results in a clean state where blinking and gating are disabled, even if MCC is enabled
  again).
- Added new 'video black_gamma' command which can be used for fine-tuning of dark image areas.
- Improved filter for CPU temperature (less jumps in measured temperature).
- Improved internal precision of gain and exposure control. This removes visible jumps in the
  image brightness which could occur in very bright environments.
- Added Sony S-Gamut3 and S-Gamut3.Cine color spaces.

Package 1 - 03-Dec-2024
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Includes:

- Software (PROTON OS)       v1.3.2
- Firmware (Video Processor) v1.4
- PROTON Updater             v1.2.2.0
- PROTON Control             v1.1.1.0

Initial release.