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# CameraBoundaryDescription

An object literal that contains information defining an area on the map.

```
interface CameraBoundaryDescription
```

## Overview

The `CameraBoundaryDescription`, returned from the [`cameraBoundary`](/documentation/MapKitJS/Map/cameraBoundary) property, contains the camera boundary represented as a [`MapRect`](/documentation/MapKitJS/MapRect) or a [`CoordinateRegion`](/documentation/MapKitJS/CoordinateRegion). Both properties describe the same rectangular area on the map.

## Topics

### Defining a Camera Boundary

[`mapRect: MapRect;`](/documentation/MapKitJS/CameraBoundaryDescription/mapRect)

A rectangular area on a two-dimensional map projection.

[`region: CoordinateRegion;`](/documentation/MapKitJS/CameraBoundaryDescription/region)

A rectangular area on a map, defined by coordinates of the rectangle’s northeast and southwest corners.


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