pub unsafe static AVCaptureExposureTargetBiasCurrent: c_floatAvailable on crate feature
AVCaptureDevice only.Expand description
A special value that may be passed as the bias parameter of setExposureTargetBias:completionHandler: to indicate that the caller does not wish to specify a value for the exposureTargetBias property, and that it should instead be set to its current value.
See also Apple’s documentation