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# 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:)`](/documentation/AVFoundation/AVCaptureDevice/setExposureModeCustom(duration:iso:completionHandler:)) or [`setExposureModeCustom(lensAperture:duration:iso:completionHandler:)`](/documentation/AVFoundation/AVCaptureDevice/setExposureModeCustom(lensAperture:duration:iso:completionHandler:)).

```
var automaticallyAdjustsExposureDuration: Bool { get }
```

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