Ah that'a naff, that seems like such as a standard feature. Tridem, that's a nice rotation, a few jumps up and down but pretty smooth overall, it seems like quite a tricky method though, i'm new to all this you see. What i had planned to do was create a scene in SketchUp as the standard viewpoint, export to Kerkythea and render, then go back to SketchUp and rotate the model, export to Kerkythea and render, etc. I'll let you know how i get on.