evil's dream world

[Koen]

Very nice rendering. Im learning NX currently and there is something like detailed (visible) thread. I dont know if there's a similar option in Inventor, but making "real" threads would add a lot to realism of your renders.
Edit: Have you tried to make the same rendering without dof? Its a nice addition but just for the sake of testing... because 7h is quite a lot of time for such scene, but then dof effect takes huuuuge amounts of time if you want to have good quality.