Type – Specifies the environment volume shader type that is used.
Aerial Perspective – Simulates the aerial perspective atmospheric effect, the result of viewing objects from a distance through the Earth's atmosphere. The effect is similar to fog or haze. This atmospheric effect works together with VRaySun and VRaySky to calculate color and brightness. Environment Fog – Simulates participating media like fog or atmospheric dust. By default, it scatters the light emitted from all the scene light sources.
