I just wanted to remind everybody that the brightness of the specular color can cause noise issues. Often I see people lower the strength of glossiness while ignoring the specular strength. That is a mistake. The brightness of the specular color must be kept under control by either lowering it or by using a specular map. Generally, the brightness should not be more than 25%. There are exceptions to this rule but that number is a good limit to keep in mind.

Hope this helps.

Paolo

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