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Aperture vs Exposure - What's the difference?

aperture | exposure |

As nouns the difference between aperture and exposure

is that aperture is an opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall while exposure is (senseid)(uncountable) the condition of being exposed, uncovered, or unprotected.

aperture

English

Noun

(en noun)
  • An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.
  • * Gilpin
    • an aperture between the mountains
  • * Owen
    • the back aperture of the nostrils
  • (optics) Something which restricts the diameter of the light path through one plane in an optical system.
  • (astronomy, photography) The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens. e.g. a telescope may have a 100 cm aperture.
  • (spaceflight, communications) The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array .
  • (mathematics, rare, of a right circular cone) The maximum angle between the two generatrices.
    • If the generatrix makes an angle ? to the axis, then the aperture is 2?.

    Usage notes

    The aperture of microscopes is often expressed in degrees, called also the angular aperture, which signifies the angular breadth of the pencil of light which the instrument transmits from the object or point viewed; as, a microscope of 100° aperture.

    Derived terms

    * aperture priority

    Related terms

    * aperient

    External links

    * * ----

    exposure

    English

    (wikipedia exposure)

    Noun

  • (senseid)(uncountable) The condition of being exposed, uncovered, or unprotected.
  • * {{quote-magazine, date=2013-06-08, volume=407, issue=8839, page=55, magazine=(The Economist)
    • , title= Obama goes troll-hunting , passage=The solitary, lumbering trolls of Scandinavian mythology would sometimes be turned to stone by exposure to sunlight. Barack Obama is hoping that several measures announced on June 4th will have a similarly paralysing effect on their modern incarnation, the patent troll.}}
  • (countable, uncountable) That part which is facing or exposed to something, e.g. the sun, weather, sky, or a view.
  • (uncountable) Lack of protection from weather or the elements.
  • * 1993 , (Paul Chadwick), The Ugly Boy , Dark Horse Books
    • As all of you know, a great tragedy occurred yesterday. Arthur Harcourt died of exposure sometimes in the morning in the woods off Mount Tom Road.
  • (senseid)(photography) An instance of taking a photograph.
  • (photography) The piece of film exposed to light.
  • (photography) Details of the time and f-number used.
  • (gardening) The amount of sun, wind etc. experienced by a particular site.

    • Derived terms

    * double exposure * multiple exposure * time exposure