"I don't believe DS will read a pz3 scene file,"

I think they use too. But then the issue would be all the surface conversions. Adding just the iray shaders that a presets wouldn't be to awful but the conversions over textures etc would be a bit of a hash since the surface settings would be off compared to studio settings. It is possible that alternate base shaders could be set up that take into account the levels for things like bump and spec when they import into studio and that could be used instead then it might not be as big a pain to make adjustments.

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