Excessive noise when using IES lights


There was a noise issue in pre-A7.2 versions. Please report it if you experience similar problems in newer versions.


Excessive noise may appear when you are using large amounts of IES lights. The amount of noise is also dependent on the IES profile you are using for the lights.


Possible solutions for noisy IES lights include:


  • increasing Light samples multiplier - this will improve the quality of direct lighting at the cost of rendering time, this may be useful for example when rendering large amounts of lights

  • using native 3ds Max's photometric lights instead of Corona lights ( lights > photometric > free/target light > light distribution type: photometric web, shadows: corona shadows )

  • changing the currently used .IES file to a different one