3ds max Getting Started Customizing user interface and defaults And basically it’s going to assign the ART renderer instead of populating the material editor with standard or old-school 3ds Max materials. It’s going to populate it with physical materials. And the physical material is very important. It’s a physically based material and it will work with almost all renderers, and your will probably want to use that almost exclusively, unless there is some compelling reason to use the old-school 3ds Max standard materials such as compatibility with a game engine or something like that. But for design visualization work or visual effects work, you’re probably going to want to use physical materials.