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# isLightEstimationEnabled

A Boolean value specifying whether ARKit analyzes scene lighting in captured camera images.

```
var isLightEstimationEnabled: Bool { get set }
```

## Discussion

When this value is <doc://com.apple.documentation/documentation/Swift/true> (the default), a running AR session provides scene lighting information in the [`lightEstimate`](/documentation/ARKit/ARFrame/lightEstimate) property of each [`ARFrame`](/documentation/ARKit/ARFrame) object it captures.

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. (A <doc://com.apple.documentation/documentation/RealityKit/RealityView> or <doc://com.apple.documentation/documentation/RealityKit/ARView> automatically uses this information to configure RealityKit lighting.)

---

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