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# isFocusRectOfInterestSupported

Whether the receiver supports focus rectangles of interest.

```
var isFocusRectOfInterestSupported: Bool { get }
```

## Discussion

You may only set the device’s [`focusRectOfInterest`](/documentation/AVFoundation/AVCaptureDevice/focusRectOfInterest) property if this property returns `true`.

---

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