---
title: "DockAccessory.AccessoryEvent.cameraZoom(factor:)"
framework: dockkit
role: symbol
role_heading: Case
path: "dockkit/dockaccessory/accessoryevent/camerazoom(factor:)"
---

# DockAccessory.AccessoryEvent.cameraZoom(factor:)

A camera zoom event.

## Declaration

```swift
case cameraZoom(factor: Double)
```

## Parameters

- `factor`: A zoom multiplier. For example, a value of 2.0 doubles the size of an image’s subject and halves the field of view.