The Transmission field is a member of the SceneCameraDebugMode enumeration in the Sandbox API. It represents a specific debug mode for the scene camera, focusing on the transmission properties of materials in the scene. This mode is useful for visualizing how light passes through translucent materials, which can be critical for debugging and optimizing rendering techniques involving transparency and refraction.

To use the Transmission debug mode, set the scene camera's debug mode to SceneCameraDebugMode.Transmission. This will adjust the camera's rendering to highlight transmission effects, allowing developers to analyze and debug how light interacts with translucent surfaces.