setExposureOffset method
Sets the exposure offset for the selected camera.
The supplied offset
value should be in EV units. 1 EV unit represents a
doubling in brightness. It should be between the minimum and maximum offsets
obtained through getMinExposureOffset
and getMaxExposureOffset
respectively.
Throws a CameraException
when an illegal offset is supplied.
When the supplied offset
value does not align with the step size obtained
through getExposureStepSize
, it will automatically be rounded to the nearest step.
Returns the (rounded) offset value that was set.
Implementation
Future<double> setExposureOffset(int cameraId, double offset) {
throw UnimplementedError('setExposureOffset() is not implemented.');
}