Width or depth? As the Hollywood studios did not know what the public would respond to in the cinema as television started to encroach, they backed both ideas: wide-screen and three-dimensional imaging. We know now the outcome. The world was not ready for stereoscopy. The burst of 3-D production was briefit was all over in a couple of years and those films that have continued in distribution are now seen in flat versions, except for occasional special presentations.
Majors' 3-D film releases
Source of data: Joel W Finler: The Hollywood Story, 1988