A Boolean value that determines whether SceneKit renders depth-of-field blur effects for the camera.
Mac Catalyst 13.0+
This value is NO by default, disabling depth-of-field effects.
Enabling this property causes SceneKit to render blur effects that model those created by a physical camera device (also known as bokeh). That is, objects in the scene appear more or less blurry depending on their distance from the camera and the camera's focusDistance, and the intensity and style of the blur effect depend on the fStop and apertureBladeCount properties.