It sounds like a crazy idea when you first hear it: learning how to light a portrait using only a computer. However, set.a.light 3D promises to give you access to an almost unlimited library of virtual lights, modifiers, studio spaces, and subjects, all with strict adherence to the laws of physics, making it easy to quickly build and explore complex lighting setups. Is it the ultimate learning tool? This great video review takes a deep dive into the software and shows you everything you can accomplish with it.