aspect ration.The relationship between the height and width of a rectangle, typically expressed as a quotient.
NotesAspect ratio is used to describe motion picture and television formats. In cinematography the standard Academy ratio is 1:1.33, with widescreen ratios typically ranging between 1:1.5 and 1:1.8, although the ratio may be as high as 1:2.5. The NTSC television standard uses a 4:3 aspect ratio; HDTV uses a 16:9 aspect ratio.
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