There has always been a desire by producers and directors with vision to want to improve what
is before them. That includes the use of action or scenes that don’t exist, or allowing actors to
appear to be in any location without leaving the studio. Such was the case with the 1940 movie
The Thief of Bagdad, which called for Jaffar, a massive genie, to play a prominent role in the
film. Special effects coordinator Larry Butler rose to the challenge and is credited with invention
of blue screen compositing, for which he won an Academy Award for Special Effects. This was a
very tedious and precise process involving several layers of film which had to be precisely aligned
when creating the master negative...
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