Об архитектурных материалах:
The settings for an Architectural material are physical properties, so it provides the greatest possible realism when used with photometric lights and radiosity.
It is not recommended that you use the Architectural material with standard 3ds Max lights in the scene, or with the Light Tracer. The point of this material is to provide accurate modeling. Use it with photometric lights and radiosity.
Tip: If you don't need the degree of realism that the Architectural material provides, you can use a standard material or other material type.
The mental ray Renderer can render Architectural materials. There are some limitations, as follows:
-Emit Energy (Based on Luminance): This setting is ignored. The Architectural material does not contribute to the scene's lighting.
-Sampling Parameters: These settings are ignored, as the mental ray renderer uses its own sampling.