Subdivisions: 50 – 60 exterior, 80 – 100 interior Min Rate: The lowest resolution of the Irradiance map.Īim for 3 passes, so if you choose -2, choose -5 for min. Set to -2 and raise to -1 if you need better definition in the shadows. We are looking for a resolution equivalent to about 1500 – 2000 pixels. Zero is full resolution, so 4000 pixels in this case. Max Rate: The maximum resolution of the irradiance map. Just remember that the Irradiance map subdivisions will also multiply. In simple scenes you can really ramp this number up, assuming your materials and lights have a low subdivision figure (8-16 or so). That is where the maximum image sample limit kicks in and stops it from endlessly sampling.Ī quick way to raise the lowest quality areas.Īn easy way to increase the quality of lights and glossy reflections in your scene. This is why Vray has a tough time with very high changes in brightness because it will never achieve this tolerance. 002 is telling Vray to keep shooting more samples and sub divide pixels until adjacent pixels are within this range. This is the maximum allowed difference in pixel value on a floating point scale. Lower values will increase the quality by not allowing Vray to lower the subdivisions for materials and lights deemed low importance, (distant lights and objects, darker objects)

Vray 3ds max settings