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# minAvailableVideoZoomFactor

The minimum zoom factor allowed in the current capture configuration.

```
var minAvailableVideoZoomFactor: CGFloat { get }
```

## Discussion

On single-camera devices, this value is always `1.0`. On a dual-camera device, the allowed range of video zoom factors can change if the device is delivering depth data to one or more capture outputs.

Setting the [`videoZoomFactor`](/documentation/AVFoundation/AVCaptureDevice/videoZoomFactor) property to (or calling the [`ramp(toVideoZoomFactor:withRate:)`](/documentation/AVFoundation/AVCaptureDevice/ramp(toVideoZoomFactor:withRate:)) method with) a value less than `1.0` always raises an exception. Setting the video zoom factor to a value between `1.0` and the minimum available zoom factor clamps the zoom setting to the minimum.

This property is key-value observable.

---

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