Ta for all the extra comments. Much appreciated
TU, I had thought about this, and it would have probably halved the render time, as the terrain took ages to render in itself, but by the time i realised that it was going to take an insane amount of time it had become a matter of principal
More fool me
Hetzen, quite right, though in my defense, if the lights didn't shine through the terrain, I wouldn't have had to go through this
Fixing that added about 400 hours to the render
Seth, see above
I don't think it was worth the render time either. Problem was that it was taking 10 hours or so for a tiny crop render at lowish quality. Now I have patience, but not THAT much
Miles