The estimated intensity, in lumens, of ambient light throughout the scene.
- iOS 11.0+
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.)