Physically Based Rendering (PBR) and the Principled Node

Chris Plush writes:

This is another lecture from our upcoming course, The Blender Encyclopedia. In this video we'll be diving deep into the Principled BSDF shader node, which is an all-in-one type node that can be used to create a ton of realistic materials such as wood, metal, marble, cloth, glass, and so much more.

In order to understand this node better we'll also go over PBR, or Physically Based Rendering, where I'll introduce you to the scientific basis for building physically accurate materials. PBR simply refers to simulating how light and materials behave in reality, and the principled node automatically does some scientific calculations to achieve this realism, So it's extremely useful when looking to create believable materials.