To the Introduction of the Triology:
*To Empire Strikes Back Introduction
*To The Return of the Jedi Introduction
Rick McCallum describes the re-shoot of the Wampa scene:
In the original Empire Strikes Back, only a few
shots of the Wampa were made. George Lucas
wanted to make the scene more suspenseful, and
the scene was reshot with more cave shots. This
allowed us to show what a vile, horrid, terrible
vicious beast the Wampa really is.
A complete Wampa suit was built and an actor in the suit
performed the primary action. Additional cheek, brow, and eye
movement was puppeteered via remote cable mechanisms.
An ice cave was constructed at less than full scale so that the
Wampa would appear larger than 1 to 1. The ice cave was of
foam-over-foil construction. Cast plastic icicles added to the look.
One scene - shot low from behind the Wampa's knee - was a
blue screen shot composited over an original plate of Luke
hanging from the ceiling of the Wampa's cave.