Aspect ratio (image)
From The Art and Popular Culture Encyclopedia
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| - | '''CinemaScope''' was a [[widescreen]] movie format used from 1953 to 1967. [[Anamorphic|Anamorphic lens]]es allowed the process to project film up to a 2.66:1 [[Aspect ratio (image)|aspect ratio]], twice as wide as the conventional format of 1.33:1. Although CinemaScope was shortly made obsolete by new technological developments, the anamorphic presentation of films initiated by CinemaScope in the [[1950s]] has continued to this day. | + | The '''aspect ratio''' of an image describes the proportional relationship between its width and its height. It is commonly expressed as two numbers separated by a colon, as in ''16:9''. For an ''x'':''y'' aspect ratio, no matter how big or small the image is, if the width is divided into ''x'' units of equal length and the height is measured using this same length unit, the height will be measured to be ''y'' units. |
| + | For example, in a group of images that all have an [[16:9 aspect ratio|aspect ratio of 16:9]], one image might be 16 inches wide and 9 inches high, another 16 centimeters wide and 9 centimeters high, and a third might be 8 yards wide and 4.5 yards high. Thus, aspect ratio concerns the ''relationship'' of the width to the height, not an image's actual size. | ||
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The aspect ratio of an image describes the proportional relationship between its width and its height. It is commonly expressed as two numbers separated by a colon, as in 16:9. For an x:y aspect ratio, no matter how big or small the image is, if the width is divided into x units of equal length and the height is measured using this same length unit, the height will be measured to be y units.
For example, in a group of images that all have an aspect ratio of 16:9, one image might be 16 inches wide and 9 inches high, another 16 centimeters wide and 9 centimeters high, and a third might be 8 yards wide and 4.5 yards high. Thus, aspect ratio concerns the relationship of the width to the height, not an image's actual size.
