Thanks for your views both. I have had a play with twilight and it certainly has some good effects although as you say it renders a view at a time each time. Maybe lightup is the way I should be going for its in house continuity I will give it a whirl.

To get to the old gallery section substitute f=9 at the end of the URL. For a good time go all the way back (about page 157) and look at the early examples by Grant Marshall, Ollie Bergman, Rein de Hart, Greg Laverdera, Allister Godfrey and others just to see what could be done with v2.