9.5.2

848 • CHAPTER 18
MATERIAL EDITOR • 849
On this page, you’ll nd settings that adjust the diffuse falloff, level and roughness of the material,
as well as the general illumination mode setting (this greatly affects how highlights react to the light
in the scene and can make a big difference when it comes to making a material look more like, say,
brick instead of like plastic). Some of these parameters apply to Oren-Nayar mode only and will be
ghosted when you use Blinn or Phong mode.
Model
© Rui Batista.
CINEMA 4D provides you with two illumination models in addition to the default Phong shading that
enhance the realism of your materials: Blinn and Oren-Nayar.
The Blinn model is similar to Phong, except that Blinn’s highlights are much more accurate. This
makes Blinn a better choice for metals and other materials where you need more accurate highlights.
Oren–Nayar, on the other hand, is the model you should use for rough surfaces, such as cloth, sand,
concrete and plaster.
Choose the illumination model for the material. For a shiny material, choose either Phong or Blinn.
Blinn is for shiny materials that need accurate highlights, whereas Phong is better suited to plastics.
For rough materials — like paper, cloth or a car tire — choose Oren-Nayar.
Diffuse Falloff
Use this parameter to adjust the falloff of diffuse reection. The default value of 0% means normal
falloff.