About Multiple Importance

Mr. chocofurMultiple ImportanceI'm raising a free tutorial about. Multiple Importance plays an important role in interior renderings. 

Here, I would like to briefly summarize the contents in Japanese. 

The emission material for the mesh isCauses of large amount of artifactswill be 

ClampYou can suppress extremely bright areas with the setting ofThe scallop of the spotlight in the back has also disappeared. 

Smaller emitting meshes have less artifacts and do not clamp the spotlights in the back. 

In cases where a large mesh light is required, turning off "Multiple Importance" in the material settings will reduce artifacts."Multiple Importance" is effective when the light source is small. 

If you use a mesh light, "more artifacts", "other lights went out”, please remember Multiple Importance again.