Cheatsheet: How to get a Cleaner image with SP3

[Alex_M]

@RockinAkin

OK thanks Vlado, good to know about the xrefs and min sample value.

For the light noise, I perhaps need to look more at this, as typically the scene I’m using is very complex in terms of materials and lighting (a realistic section of an eyeball, lit with HDRI), so when I test on a more typical interior or exterior I’ll be better to judge on the noise “issue”.

Cheers,
Dean

Is your noise caused by bright pixels? Since you’re using HDRI, it’s possible that it has some very bright portions or it’s bright values are boosted by the gamma parameter in the HDRI map. This can make reflections pick very bright rays from these bright parts of the HDRI. See if the problem with the reflection noise still exists if you turn on “Max ray intensity” and set it to 20 or thereabouts. Don’t go very low since it’s going to “decrease” the dynamic range of your images.