These diagrams illustrate the evolution of the aspect ratio of the 35mm film from the silent era through Academy, Flat, Cinemascope and Widescreen formats, with additional examples of post-WWII cinema in Europe, Asia and the former USSR.
The attached PDF file features a creatively illustrated slide show loosely formatted to imitate the frame-by-frame appearance of 35mm film. It tells a true story about responsibility, professional expectations and the need for resilience in a multicultural workplace where unanticipated complications may arise without warning.