I had a similar problem, (I think) importing a human character in .obj format from Blender to Bryce, and the complete scene then into PhotoShop. I found a great improvement by importing the .obj file into Daz Studio 4 and then exporting directly into Bryce. Why this should work, I have no idea... Perhaps someone wjth more than my limited experience could add some enlightenment? 

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As a writer, I control the lives of millions. Whole worlds can be destroyed by typing the correct sequence of letters on my keyboard.

Robert A. Read