#Stargate
Benoit,
The scenes in which the helmets were "mechomorphed" were filmed twice. As you
suspected, once with the helmets in place and once without. The differences
between the scenes (ever get someone to choke the same way twice?) were also
part of the magic worked by Elastic Reality.
There were no 3D effects in those shots, the appearence of 3D was created using
the new Jigsaw rendering mode in Elastic Reality (also in the Windows version)
which allows every shape to be warped/moved on a totally seperate layer from
the rest of the shapes (allowing arbitrary overlapping of regions).
The morph was done over time given to the two film sequences.
Jason