In CG, you must fake certain traits of light in the real world. Using certain methods, you can create smoky light beams, glowing lights, and lens flares. Although some of these effects fall under the domain of rendering and shader tricks, they’re best explored in the context of lighting, because they’re created by light in the real world.
How do you create an effect such as a flashlight beam shining through fog? This lighting effect is called volumetric lighting, and you can use it to create some stunning results that can sometimes be time consuming to render.
You can’t apply volumetric effects to Ambient and Directional light types. To add a volumetric effect to any of the other types of lights, select the ...