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# minExposureRectOfInterestSize

The minimum size you may use when specifying a rectangle of interest.

```
var minExposureRectOfInterestSize: CGSize { get }
```

## Discussion

The size returned is in normalized coordinates, and depends on the current [`activeFormat`](/documentation/AVFoundation/AVCaptureDevice/activeFormat). If [`isExposureRectOfInterestSupported`](/documentation/AVFoundation/AVCaptureDevice/isExposureRectOfInterestSupported) returns `false`, this property returns { 0, 0 }.

---

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