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This handmade sheet was unearthed in the Cinerama archives by producer-director David Strohmaier during his research for the production Cinerama Adventure (See our links page to visit the Cinerama Adventure website). The sketch has been reproduced in a number of publications such as American Cinematographer and The American Cinematographer Manual. It's as good a source for bar bets as you're apt to find.

NOTE: There are numerous websites and other resources that will tell you that Cinerama had an aspect ratio of up to 3:1. When you find such a source it's probably a good idea to quit reading at that point because the author has done absolutely no research on the subject. As is seen here, the camera aspect ratio is 2.59:1. The optimum screen image, with no architectural constraints, was about 2.65:1, with the extreme top and bottom cropped slightly to hide anomalies.

Cinerama spec sheet by Erik M. Rondum, one of Cinerama's camera designers.

Read 2 page interview with Erik Rondum
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Copyright(c) AWSM all rights reserved. Created: 8/7/2002 Updated: 8/1/2003