Sets the bias to be applied to the target exposure value.
- iOS 8.0+
- Mac Catalyst 13.0+
The bias to be applied to the exposure target value.
A block to be called when the
exposureproperty has been set to the value specified.
The block receives a timestamp that matches that of the first buffer to which the setting has been applied. The timestamp is synchronized to the device clock, and thus must be converted to the master clock before comparison with the timestamps of buffers delivered via an
Video Data Output
The client may pass
nilfor the handler parameter if knowledge of the operation's completion is not required.
This method is the only way to set the
This method throws an
NSInvalid exception if
exposure is set to an unsupported level. A
NSGeneric exception is thrown if this method is invoked without first obtaining exclusive access to the receiver using