---
title: "init(device:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avcapturesystemzoomslider/init(device:)"
---

# init(device:)

Creates a slider to control the video zoom factor of a capture device.

## Declaration

```swift
init(device: AVCaptureDevice)
```

## Parameters

- `device`: The capture device to control.

## Discussion

Discussion You can only create a zoom slider with a device that support’s setting its videoZoomFactor property value.

## See Also

### Creating a zoom slider

- [init(device:action:)](avfoundation/avcapturesystemzoomslider/init(device:action:).md)