Film & Television 1.33:1 1940s Television Film 1.33:1 2.35:1 1950s At the dawn of television, it adopted the same aspect ration that was common in motion pictures (1.33:1) In the 1950s the motion picture industry began to offer movies in a wider format. Cinemascope was among the most successful and whose name is identified with wide-screen movies. This strategy was adopted to differentiate movies from television. In the 1990s the Advanced Television Systems Committee established the wide-screen standard for television broadcast at 1.77:1. This aspect ration was a compromise between coexisting with 1.33:1 images from legacy television programs and the myriad of movie aspect ratios. This made it necessary for movies that were 2.35:1 to be “letterboxed” in order to avoid cropping the images. 2.35:1 1.77:1 1990s Cinema-scope is a trademark of 20th Century Fox Corporation

Film & Television 1.33:1 1940s Television Film 1.33:1 2.35:1 1950s The same anamorphic principles (optical stretching the image in the horizontal plane) that made the original wide-screen movie presentations possible can be applied to home theater projectors and convert the native 1.77:1 aspect ratio to 2.35:1. 2.35:1 1.77:1 1.33x Anamorphic Lens 1990s Cinema-scope is a trademark of 20th Century Fox Corporation

16:9 (1.77:1) Digital Widescreen (2.35:1) 4:3 (1.33:1) SDTV XGA UXGA Starting Aspect Ratio Formats Anamorphic Ratio Final Aspect Ratio 16:9 (1.77:1) Digital Widescreen 4:3 (1.33:1) SDTV XGA UXGA 1.33 x 5:4 (1.25:1) 1.42 x 1.9 x D-Cinema 1.3K SXGA (2.35:1) Digital projectors are available in a number of aspect ratios but there are anamorphic lenses, available from Schneider to allow conversion to the two most popular wide screen formats. 1.33 x 16:9 (1.77:1) HDTV 720p 1080p DTV