Render setup.

Something covered rightly was the rendering option which are many.
I have encoutered some problem while rendering.

One of the many settings is assinging a renderer for the rending.
he default one was scanline renderer.

When I was working with the necron model I used materieals and object lighting that needed the mental ray rendeder,  the default renderer would let the object light to go through objects and come out the other side, or would nt render the metals properly.

When I created the dreadnaught and enviroment I  had the default renderer and that workd fine cause of the materials I used.
Then I added the necton to the scene to test. The necron would not render properly so I changed the renderer to mental ray.
The change in renderer would render the necron and the gold rim of the dreadnaught but all other textures (dread, walls, pipes) would be almost black.
Finaly after some searching I found that there are some presets for the mental ray. I tryed them all the one I liked the most was mental ray.no.gi.