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# cameraLensSmudgeDetectionInterval

The camera lens smudge detection interval.

```
var cameraLensSmudgeDetectionInterval: CMTime { get }
```

## Discussion

[`cameraLensSmudgeDetectionInterval`](/documentation/AVFoundation/AVCaptureDevice/cameraLensSmudgeDetectionInterval) is set by calling [`setCameraLensSmudgeDetectionEnabled(_:detectionInterval:)`](/documentation/AVFoundation/AVCaptureDevice/setCameraLensSmudgeDetectionEnabled(_:detectionInterval:)). By default, this property returns `kCMTimeInvalid`.

---

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