Imperial Slug said:
I'm surprised how much more information there is on the sides of the 35mm scan compared to the GOUT shots. Just when you thought you've seen all there is to see of Star Wars...
you lose 5%-15% or more, due to the cropping in the theater.
and also due to the cropping for home versions.
viewing at home, and in the theater is very different.
there's a whole thread of cropping and images here:
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http://originaltrilogy.com/forum/topic.cfm/Cropping-the-Original-Trilogy-35mm-vs-dvd-gout/topic/13945/
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this is the standard practice.
about overscan:
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http://en.wikipedia.org/wiki/Overscan
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There is no hard technical specification for overscan amounts for the low definition formats. Some say 5%, some say 10%, and the figure can be doubled for title safe, which needs more margin compared to action safe. The overscan amounts are specified for the high definition formats as specified above.
Different video and broadcast television systems require differing amounts of overscan. Most figures serve as recommendations or typical summaries, as the nature of overscan is to overcome a variable limitation in older technologies such as cathode ray tubes.
However the European Broadcasting Unionhas safe area recommendations regarding Television Production for 16:9 Widescreen.[7]
The official BBC suggestions[8] actually say 3.5% / 5% per side (see p21, p19). The following is a summary:
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and for movies:
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2.39:1
For a correct presentation, the area within the red rectangle (projector aperture of 0.825" by 0.690") is projected with a 2x horizontal unsqueeze onto a 2.39:1 sized screen.
Examples: Star Wars, October Sky.
by the way, good resources about projecting:
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1
http://hsvmovies.com/static_subpages/formats/anamorphic_format.html
2
http://hsvmovies.com/static_subpages/formats/aspect.html
3
http://www.widescreenmuseum.com/widescreen/lbx.htm
later
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