---
title: minFocusRectOfInterestSize
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcapturedevice/minfocusrectofinterestsize
---

# minFocusRectOfInterestSize

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

## Declaration

```swift
var minFocusRectOfInterestSize: CGSize { get }
```

## Discussion

Discussion The size returned is in normalized coordinates, and depends on the current activeFormat. If isFocusRectOfInterestSupported returns false, this property returns { 0, 0 }.

## See Also

### Setting a focus rectangle of interest

- [isFocusRectOfInterestSupported](avfoundation/avcapturedevice/isfocusrectofinterestsupported.md)
- [focusRectOfInterest](avfoundation/avcapturedevice/focusrectofinterest.md)
- [defaultRectForFocusPoint(ofInterest:)](avfoundation/avcapturedevice/defaultrectforfocuspoint(ofinterest:).md)