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Aperture vs Shutter - What's the difference?

aperture | shutter |

As nouns the difference between aperture and shutter

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 shutter is one who shuts or closes something.

As a verb shutter is

to close shutters covering.

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

    * * ----

    shutter

    English

    Noun

    (en noun)
  • One who shuts or closes something.
  • * (Max Beerbohm)
    • it would be very difficult to pack this drawing in such a way that it would be sure not to be injured by the frantic fingers of the openers and shutters .
  • (usually, in the plural) Protective panels, usually wooden, placed over windows to block out the light.
  • (photography) The part of a camera, normally closed, that opens for a controlled period of time to let light in during taking a picture.

    • Derived terms

    * roller shutter * shutter priority * shutter speed

    Verb

    (en verb)
  • To close shutters covering.
    • Shutter the windows, there's a storm coming!
  • To close up (a building or an operation) for a prolonged period of inoccupancy.
    • It took all day to shutter the cabin now that the season has ended.
    The US is seeking to get Iran to shutter its nuclear weapons program.

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