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I've recently been learning how to use a camera, and was wondering what ISO stood for?

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    \$\begingroup\$ ISO doesn't actually stand for anything, it's the chosen short form for the name of the International Organisation for Standardisation. \$\endgroup\$
    – Guffa
    Feb 7, 2013 at 12:50
  • \$\begingroup\$ See also: photo.stackexchange.com/questions/25917/… \$\endgroup\$ Feb 8, 2013 at 12:43

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According to the wikipedia article on Film Speed (under the ISO section) it stands for International Organization for Standardization.

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