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For other uses, see Aspect ratio (disambiguation).
Look up aspect ratio in Wiktionary, the free dictionary.
The aspect ratio of a shape is the ratio of its longer dimension to its shorter dimension. It may be applied to two characteristic dimensions of a three-dimensional shape, such as the ratio of the longest and shortest axis, or for symmetrical objects that are described by just two measurements, such as the length and diameter of a rod. The aspect ratio of a torus is the ratio of the major axis R to the minor axis r.
Applications and uses
The term is most commonly used with reference to:
- graphic / image
- tire code
- tire sizing
- wing aspect ratio of an aircraft or bird
- Astigmatism of an optical lens
Examples
From left to right:
- 1.3 = 4:3: Computer monitors (VGA, XGA, etc), SDTV
- 1.414… = √2:1: Silver ratio, International paper sizes (ISO 216)
- 1.5 = 3:2: 35 mm film
- 1.618…: Golden ratio
- 1.6 = 15:9 = 5:3: Widescreen computer monitors (WXGA, etc.)
- 1.7 = 16:9: HDTV
See also
- Ratio
- Equidimensional ratios in 3D
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