yes you’re right about Mental and micropolygon ,
but that is right to do animation, you can animate your meshs who will remain light, Vray can’t do that.
If the instruction manuals were enough, that would be known and especially… that would make on these forums all as far as we are.
I compare my results with those obtained with Mental ray under Maya and I do not arrive has results similar. my request and those of the others, were that you can develop your demonstration so that one can advance on this subject which is new in the world of the 3d, now, if that disturbs you at this point to share your result and the way taken to arrive there do not speak about it any more. All of us have a life and work.
thx for your answer.