Quote - One thing that will be interesting to see between Reality 2 and 3 is the problems with fireflies and artifacting that occurred when using Daz Studio / Reality 2 and Lux 1.0 RC1 & 2 and well even 0.8 and 0.9.

This is typically a material definition problem. Meaning that the glossiness is beyond what it should be. You can easily fix this issue by looking at the brightness of the specular color. In general it should never go beyond 1/4 scale if you don't have a specular map. For example, if your specular color is a shade of grey, you should keep it below 30, 30, 30. If you have a specular map for the material you can go much higher because the specular map will keep the individual pixel values withing range. 

This is in connection with the glossiness strength. From your example it seems that the dress is extremely shiny. Lowering the glossiness might help. Also, the skin seems over-exposed so you might want to look into that. Pure white in the diffuse channel is generally better avoided. Use something like 204, 204, 204 instead.

Lastly, avoid Distant Lights at all costs. I noticed that people coming from Studio or Poser lighting often have  the habit to use those light fixtures. That is understandable because they are often necessary with biased renderers. With Lux they should be avoided completely. They are unncessary and create all kind of issues. Use mesh lights instead.

Hope this helps.

Paolo

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