What exactly are PBR textures and how do they help 3D artists create photorealistic images in applications such as Blender, Cinema 4D, Maya, Unity and Unreal Engine?
PBR or Physically Based Rendering attempts to simulate how materials behave in the real world, particularly how they reflect and absorb light. For example, most metal materials will reflect a lot of light while a surface such as concrete will reflect very little light giving it a flat matt looking surface.
To achieve this photorealistic look PBR textures normally consist of several different texture maps which include information that describes the colour of the material, its reflectiveness and roughness, the depth and height and even how the material deals with ambient lighting.
The quality of the final 3D models and scenes that you would create in an application such as Blender will rely heavily on the quality of the textures you are using, to this end we have curated the top 7 websites where you can download quality PBR textures to make your rendered output as realistic as possible, totally for free, with a creative commons license (CC0).