Instance Property


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


@property(nonatomic, assign, getter=isLightEstimationEnabled) BOOL lightEstimationEnabled;


When this value is YES (the default), a running AR session provides scene lighting information in the lightEstimate property of each 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. (The ARSCNView class automatically uses this information to configure SceneKit lighting.)

See Also

Configuring the AR Session


A value specifying how the session maps real-world device motion into a 3D scene coordinate system.


Options for how ARKit constructs a scene coordinate system based on real-world device motion.