A Boolean value that indicates whether the capture device should automatically switch to low light boost mode when necessary.
- iOS 6.0+
- Mac Catalyst 13.0+
AVCapture object where
true, a special low light boost mode may be engaged to improve image quality. When the
automatically property is set to
true, the capture device switches at its discretion to a special boost mode under low light. When the scene becomes sufficiently lit, the device switches back to normal operation. An
AVCapture that supports this feature may only engage boost mode for certain source formats or resolutions.
The default value of this property is
false. Setting this property throws an
AVCapture object must be locked for configuration using
lock before clients can set this method, otherwise an
generic is thrown.
Clients may observe changes to the
is property using Key-value observing to know when the boost mode engages. The switch between normal operation and low light boost mode may drop one or more video frames.