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# How does math relate to photography?

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Photographers use math in a variety of contexts, and they must be comfortable with fractions, geometry and basic arithmetic. For example, when adjusting the aperture of a lens, which determines how much light enters the camera, the photographer must be able to compare fractions to determine which one is larger than the other. Additionally, the framing of shots relies on geometry as well as artistic ability.

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Credit: Digital Camera Magazine / Contributor Future Getty Images

According to Chron, determining the amount of light that the camera allows inside is a complicated process. Three different variables affect the amount of light, and they all counteract each other. The size of the aperture is measured in f-stops, which are the focal length of the lens divided by the aperture opening. When the aperture is large, more light enters the camera. Additionally, the ISO speed determines how quickly the camera reacts to light, while the shutter speed controls how long light is allowed into the lens.

When framing a shot, many photographers try to line up the subject with one of several imaginary lines that overlay the shot. Typically, photographers imagine three horizontal lines and three vertical lines crossing the frame. The subject should be placed on one of the junctions that the lines make.

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## Related Questions

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Smart Tutor offers free online math lessons for second graders, including lessons on numbers, operations, measurements and basic geometry. AdaptedMind offers 201 online lessons for second grade math, including basic operations, telling time, comparing coins and an introduction to fractions. JumpStart and Education.com have additional resources for second-grade mathematics.

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Math problems found in the GED exam cover both basic and advanced algebra, averages and rounding, basic operations, sequences, exponents, fractions, square roots, geometry, graphs, measurements, percentages and ratios. According to Kentucky Adult Education, test takers most commonly make mistakes on math problems covering geometry and measurements, reading and interpreting graphs and tables, applying basic math principles and solving problems with mathematical reasoning.

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Aryabhata was an ancient Indian philosopher and astronomer who made a wide variety of contributions, including approximating the value of Pi, asserting that the Earth makes a daily rotation on an axis and describing rules for eclipse calculations. He wrote numerous books in his lifetime, many of which are believed to be lost. He lived from about 476 to 550 A.D.