aperture
aperture
Definition
ap·er·ture (ap′ər c̸hər)
noun
- an opening; hole; gap
- the opening, or the diameter of the opening, in a camera, telescope, etc. through which light passes into the lens
Etymology: L apertura < apertus, pp. of aperire, to open < IE *ap-wer-, to uncover < base *ap(o)- away + *wer- to close, cover > warn
aperture
Synonyms
aperture
Usage Examples
Preposition: of
- f2.8: This new 28-80mm focal length auto-focus zoom provides a constant fast aperture of f2.8 throught its zoom range.
Converse of object
- splay: The only window has a deeply splayed aperture, the sloping sill utilizing a cross slab; a modern lintel.
Adjective modifier
- square-headed: South wall: square-headed slit aperture about 3m below the standard belfry window.
- louvered: Finally, three standard louvered apertures at the top of the wall.
- numerical: Numerical Aperture The numerical aperture of a microscope objective is a measure of its ability to resolve fine specimen detail.
- circular: For a circular aperture this should be set to 0.0.
- rectangular: The audience enter a booth one at a time to watch a three minute performance through a small rectangular aperture.
- maximum: For grasp, maximum grip aperture and time to maximum grip aperture were measured.
Modifies a noun
- photometry: The saturation level in the aperture photometry was a constant.
- diaphragm: The aperture diaphragm is located at the light guide end.
- telephoto: This large aperture telephoto macro lens enables you to shoot up to 1:1 life size close-ups.
- radar: The modified Bombardier Global Express is fitted with an active synthetic aperture radar for ground surveillance.
- grille: These models incorporate the award winning Diamondtron NF ( Natural Flat ) aperture grille CRT.
- antenna: The effective area is usually ( in the case of an aperture antenna ) somewhat smaller than the physical area.
Noun used with modifier
- AGP: See the ' How can I change my AGP Aperture size?
- stencil: The paste flowing into the stencil apertures, filling them.
- condenser: The condenser aperture controls the fraction of the beam which is allowed to hit the specimen.
- slit: South wall: square-headed slit aperture about 3m below the standard belfry window.
- pallet: However the center column shows that the rate of fall was greater for the narrower pallet aperture.
- lens: You can use the guide number to work out the lens aperture for the correct exposure at any distance.
