Some knowledge of lighting technology

In the field of post production, material and lighting is a technology, a kind of knowledge, is an "art", more and more scene creation, material realistic restoration reproduction rely on the use of various "virtual light source" to simulate reality.

This article introduces the relevant knowledge of lighting technology.
First, let us understand the basic knowledge of light in nature.
We see lights in everything around us, and in fact, our first understanding of the world is how important lights are for us to know and see things: