automaticallyAdjustsExposureDuration

This property reports true whenever exposureDuration is unlocked, either by setting exposureMode to one of the automatic modes, or by passing AVCaptureExposureDurationAuto to the duration parameter of Setexposuremodecustom(duration:iso:completionhandler:) or Setexposuremodecustom(lensaperture:duration:iso:completionhandler:).

var automaticallyAdjustsExposureDuration: Bool { get }