This site is dedicated to the creation of cinema 4D material with Physically Based Rendering engines like Octane, Redshift, Corona and Arnold rendering engines.
So, on c4dmaterial.com you will find packs of cinema 4D material in .lib4d format to be pasted into your browser library folder.
A lot of care has been given to all the materials created and they are very detailed and most of them are made with PBR 4K textures but some are made with substance or procedural shader.
They all have nodes for color adjustment of ambient occlusion, physical fresnel, anisotropy, displacement, normal map, material Blender, curvature, fingerprints, micro scratches and thus give maximum photorealism.