Sourced from picamera2's releases.

Beta release 7

0.3.8 Beta Release 7

Added

• Support for cameras that have autofocus integrated properly with libcamera.
• New switch_mode_and_capture_request method.

Changed

• Fewer frame drops when recording videos.
• Fixes when closing a preview window with the mouse.

Beta release 6

0.3.7 Beta Release 6

Added

• Ability to control via the configuration "queue" parameter whether Picamera2 keeps hold of the last completed request or not. This means you may wait marginally longer for a capture in some use cases, but also that the system cannot give you the frame that arrived slightly before you requested it.

Changed

• The Picamera2.start_encoder function prototype has been made very similar to Picamera2.start_recording for consistency. Most existing calls still work, but there are a few call patterns that may need updating. The new prototype is: start_encoder(self, encoder=None, output=None, pts=None, quality=Quality.MEDIUM)
• The Picamera2.wait function now requires an argument, which is the "job" that was returned to you when you made the asynchronous call, for example instead of

picam2.capture_file("test.jpg", wait=False)
metadata = picam2.wait()

you would use

job = picam2.capture_file("test.jpg", wait=False)
metadata = picam2.wait(job)

Please also refer to our updated Qt examples.

• Some bug fixes when starting and stopping encoders.
• Risk of video frame drops during transient busy periods reduced.

Beta release 5

0.3.6 Beta Release 5

Added

• The Picamera2.global_camera_info() method will return information about all the attached cameras.
• We have introduced the ability to control multiple Picamera2 objects (all opened for different cameras) within the same Python process. They behave independently and can each have their own preview window.
• There is now limited support for USB webcams that deliver MJPEG or YUYV streams. Images can be displayed by the QT (not QTGL) preview.
• Picamera2 objects have a title_fields property which can be set to a list of the metadata fields to display on the preview window title bar (for example `picam2.title_fields = ["ExposureTime", "AnalogueGain"]).

Changed

• Resources are freed more reliably when Picamera2 objects are closed.

... (truncated)

Sourced from picamera2's changelog.

0.3.8 Beta Release 7

Added

• Support for cameras that have autofocus integrated properly with libcamera.
• New switch_mode_and_capture_request method.

Changed

• Fewer frame drops when recording videos.
• Fixes when closing a preview window with the mouse.

0.3.7 Beta Release 6

Added

• Ability to control via the configuration "queue" parameter whether Picamera2 keeps hold of the last completed request or not. This means you may wait marginally longer for a capture in some use cases, but also that the system cannot give you the frame that arrived slightly before you requested it.

Changed

• The Picamera2.start_encoder function prototype has been made very similar to Picamera2.start_recording for consistency. Most existing calls still work, but there are a few call patterns that may need updating. The new prototype is: start_encoder(self, encoder=None, output=None, pts=None, quality=Quality.MEDIUM)
• The Picamera2.wait function now requires an argument, which is the "job" that was returned to you when you made the asynchronous call, for example instead of

picam2.capture_file("test.jpg", wait=False)
metadata = picam2.wait()

you would use

job = picam2.capture_file("test.jpg", wait=False)
metadata = picam2.wait(job)

Please also refer to our updated Qt examples.

• Some bug fixes when starting and stopping encoders.
• Risk of video frame drops during transient busy periods reduced.

0.3.6 Beta Release 5

Added

• The Picamera2.global_camera_info() method will return information about all the attached cameras.
• We have introduced the ability to control multiple Picamera2 objects (all opened for different cameras) within the same Python process. They behave independently and can each have their own preview window.
• There is now limited support for USB webcams that deliver MJPEG or YUYV streams. Images can be displayed by the QT (not QTGL) preview.
• Picamera2 objects have a title_fields property which can be set to a list of the metadata fields to display on the preview window title bar (for example `picam2.title_fields = ["ExposureTime", "AnalogueGain"]).

Changed

• Resources are freed more reliably when Picamera2 objects are closed.

0.3.5 Beta Release 4

... (truncated)

• af75efd Update setup.py and change log for 0.3.8 release
• 6a884ca Fixes for cameras with no full sensor resolution modes
• cf2a50a Add a simple autofocus demo app, and fix up app_full.py
• 9c44552 Add autofocus support
• c81d0f6 Ensure that jobs in the event loop get to see all requests
• 54acdfc Move the call to render the camera image into process_requests
• 88727ad Separate a job completing from invoking the end-of-job signals
• c0158ae Add an example/test for switch_mode_and_capture_request
• 4b60762 Add switch_mode_and_capture_request
• 3967628 Make requests use their own copied configuration information
• Additional commits viewable in compare view

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