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Iso

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International Organization for Standardization

ISO is the short name of the International Organization for Standardization, a global federation of over a hundred national standards bodies with central secretariat in Geneva, Switzerland. This short name is derived from the Greek word meaning equal. It is not an acronym for the organization's name in any of its working languages, though it is conventionally written in all capitals.

An ISO standard is an international standard published by the International Organization for Standardization. Although more than 15000 ISO standards have been published so far, each identified by a document number, the term ISO is in some fields commonly used just on its own as a shortname for something defined in one of these specifications. For example:

  • In photography the normal ISOs that are in increments of 1 EV: 100, 200, 400, 800, 1600, etc...
  • In photography, the ISO number is the measure of film speed (sensitivity of photographic film to light exposure) defined in international standard ISO 5800.
  • In digital photography the sensitivity of the image sensor. each full step is equal to + or -1 EV. (i.e. if a meter indicates 12 EV you can shoot at f/5.6 and at 1/125 of a second at ISO 100, but you can stop down to f/4 and 1/125 or f/5.6 at 1/250 and use ISO 200.
  • In computing, an ISO file or ISO image (in context also just ISO, .iso or .ISO) is an ISO 9660 image, a bitstream that represents a CD-ROM file system as defined in international standard ISO 9660.


Prefix

Iso- is a prefix indicating equality or similarity (derived from the Greek word mentioned earlier). Many English words, especially of a technical nature, contain the prefix. See the list of English words containing the prefix, iso-.


An iso may refer to a contour line (derived from isopleth, isogram or isarithm, which are jargon terms for contour line derived from the fact that they connect points of equality).

Iso may also be used as an abbreviation for other words containing the prefix.


Acronym

ISO is also a three-letter acronym which can stand for:

In other languages

Iso means the following in other languages:


Other Uses

Iso or ISO may also refer to:

es:Iso fr:ISO sl:izo

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