---
title: ambientIntensity
framework: arkit
role: symbol
role_heading: Instance Property
path: arkit/arlightestimate/ambientintensity
---

# ambientIntensity

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

## Declaration

```swift
var ambientIntensity: CGFloat { get }
```

## Discussion

Discussion This value is based on the internal exposure compensation of the camera device, and scaled to be appropriate for use in rendering architectures that use realistic lighting metrics. A value of 1000 represents “neutral” lighting. For example, you can pass this value directly to the intensity property of a SceneKit ambient light for lighting results that roughly match those of the real-world scene captured by the device camera. (However, passing this value to SceneKit is generally not necessary; the ARSCNView class automatically sets SceneKit lighting based on this value.)

## See Also

### Examining Light Parameters

- [ambientColorTemperature](arkit/arlightestimate/ambientcolortemperature.md)