Here I created a photograph from x-plane 10. , where its divided in 6 sections, on far left trees are set to none where the far right is set to tree hugger and everything in between none,sparse,populated,filled in,overgrown,tree huggers. i was going to put lines between each but it didn't happen. this should give you a guide what you prefer to set it on. None is all blurred and looks like crap, I would go mid way to Populated