Blender 2.93 The Principled Shader and Light Behavior

An easy-to-follow, detailed look at every feature of Blender’s Principled Shader and their relationship to the basic behaviors of light: absorption, reflection, transmission and refraction. Tired of moving sliders around, guessing what values are necessary to create the look you’re after? Whether you’re new to Blender or experienced, if you’re not quite sure how to get the most out of the Principled Shader’s features, or are curious about why it behaves the way it does, this tutorial walks through each value and all the aspects of using them to their fullest extent. This tutorial takes the guesswork out of using the principled shader to make a wide array of materials, and touches on photorealism at the material level. We’ll explore how each feature works with respects to basic light behavior principles (optics), and best methods for using each feature.

This tutorial is Part 2 in a series all about procedural materials.

Music: "Acid Trumpet" by Kevin McLeod

Subsurface Scattering Chart
https://blender.stackexchange.com/que...

Pixar SSS Paper
https://graphics.pixar.com/library/Ap...

Index of Refraction (IOR resources):
https://pixelandpoly.com/ior.html
https://refractiveindex.info/

Textures:
Textures.com

Timestamps:
Behaviors of Light: 0:19
Color: 1: 05
Subsurface Scattering: 2:27
Subsurface Radius: 5:24
Subsurface Distribution Options: 10:34
Metallic and Specular Reflections: 11:53
Metallic Reflections & Optics: 14:06
Specular Reflections & Optics: 15:05
Specular Tint: 15:56
Roughness: 16:23
Anisotropy: 17:04
Radial Anisotropy: 18:14
Tangent Input (Anisotropy): 19:11
Anisotropic Rotation: 19:40
Customized Positioning of Anisotropic Effect: 19:55
Linear Anisotropy and UV Map: 21:43
Sheen: 25:02
Sheen tint: 25:59
Clearcoat: 26:19
Transmission: 26:53
Index of Refraction (IOR): 27:20
Transmission Roughness: 28:19
Surface Distribution Options (Transmission): 28:48
Emission: 29:45
Alpha: 30:00
Normals: 30:12
Clearcoat Normals: 31:35