Redshift Environment

This object can be used to simulate atmospheric effects and volumetric fog in the scene.
The space around us is not empty. It contains small particles of water, dust, ash, etc. As light travels through this space (called the "medium") and depending on the composition of these particles, it changes. Parts of the lighting get absorbed while the remaining lighting gets scattered around.

With this Redshift Environment object you can describe the lighting properties of the medium and, therefore, its effects on lighting.
This allow you to render:

• A global fogging effect
• Volumetric light beams and shadows