I think the most helpful will probably be using the bilateral blur by Bartek. This allows you to still get indirect lighting with 'No Caustics' turned on in the light paths while reducing noise. To summarize, for the glossy material you can use the 'Is Diffuse Ray' from a Light path node to choose between a glossy or diffuse material. Over at CGCookie you may find help with Sebastian's tutorial on reducing caustic noise. Turning up the filter glossy value (in light paths panel) can help. As mentioned by futurehack you can render twice with low samples using different seed values which puts the fireflies in different locations, when mixed together the fireflies get cancelled out.Īn example of two renders with 10 samples and different seed values.
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