Every setting on the OpenPBR Material node, laid out the way Cinema 4D shows it. Open a tab, click any setting, and read what it does and what it starts at in a new material.
In Cinema 4D 2026, creating a Redshift material gives you an OpenPBR Material. It follows OpenPBR, an open standard shared across renderers and applications, so a material built on it describes the same surface in the same terms elsewhere. Redshift's older Standard Material is still available and uses different names for many of the same ideas - its Reflection is OpenPBR's Specular, its Sheen is OpenPBR's Fuzz.
Two things catch people out:
Click any setting on the left to see what it does. Nearly all the look lives on Base Properties: start with Base Color, Metalness and Specular Roughness.
Rows with only a small circle are sockets - they take a node wired in from the Node Editor, such as a bump map, and have no value of their own.
Looking for something specific? Use the search box. It knows the words you would use, not just C4D's labels - glass finds Transmission, velvet finds Fuzz.