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http://www.imdb.com/title/tt0241527/ 2 disc Widescreen version in Digipack releases. This Harry Potter movie was originally filmed in a larger picture format than the Theatrical version, so that different formats can be cut out. This is called the Open Matte technique. From the original format, cuts have been made for the theatrical version 2: 35: 1; the widescreen format 16: 9 (1.78.1) and the TV standard format 4: 3 (1.33.1). In addition, the Pan & Scan technique has been used for each image format, whereby the focus of the crop moves over the original format in order to keep important aspects within the crop. When the focus does not move, the technique is called "center cut", when the original image is stretched or shrunk in length or width (making it fit) then the technique is called "letterbox". When the picture format is adjusted with black bars this is called "matting". Full Frame no longer means that the screen of the display device is completely filled with no black bars (by cutting, stretching, or that the original film format matches the screen ratio of the display device).
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