Don't forgot that the camera moves, there's a refraction. I think that it should be made in 3D. I tried something with Torus and animated size and taper with a Raytrace texture and it gave me a good result. The only problem is that I have to do many toruses and animate everyone individually. Chanson, you're trick is very good, but I'm learning Max and try to do it all in Max. Thanks for helping me. I think that your advice can be use for an fixed image.