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# ARLightEstimate

Estimated scene lighting information associated with a captured video frame in an AR session.

```
class ARLightEstimate
```

## Overview

If you enable the [`isLightEstimationEnabled`](/documentation/ARKit/ARConfiguration/isLightEstimationEnabled) setting, ARKit provides light estimates in the [`lightEstimate`](/documentation/ARKit/ARFrame/lightEstimate) property of each [`ARFrame`](/documentation/ARKit/ARFrame) it delivers.

If you render your own overlay graphics for the AR scene, you can use this information in shading algorithms to help make those graphics match the real-world lighting conditions of the scene captured by the camera. The [`ARSCNView`](/documentation/ARKit/ARSCNView) class automatically uses this information to configure SceneKit lighting.

## Topics

### Examining Light Parameters

[`ambientIntensity`](/documentation/ARKit/ARLightEstimate/ambientIntensity)

The estimated intensity, in lumens, of ambient light throughout the scene.

[`ambientColorTemperature`](/documentation/ARKit/ARLightEstimate/ambientColorTemperature)

The estimated color temperature, in degrees Kelvin, of ambient light throughout the scene.


---

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