Wow! That works well doesn't it? I wonder if it's because there's a band of light that arcs over the HDRI? I appreciate you having a play with it and thanks for the interest too. I imagined that back plates would be helpful as I was trying to play with that HDRI but the background but it wasn't holding up, as you punch in quite far. And I've found manipulating 15K spherical images in Photoshop is beyond it. It's horrible weather here and the light's terrible - perhaps tomorrow I'll get something? PS Love the attention in the 911 model - especially in the tyre decals, they always give CG away IMHO. Thanks again.