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aperture

['æpəʧə] n
génér. отвір m; щілина f; шпара m; відтулина f; прохід m (отвір)
arch. пройма f; просвіт f
aviat. розхил m (антени)
botan. устя n
constr. проріз m; проліт m
milit. довжина f; розкрив m
optiq. апертура f
phot. отвір діафрагми об'єктива
фото aperture n
optiq. діафрагма f
aperture ['æpəʧə] adj.
génér. апертурний
 Anglais glossaire
aperture ['æpəʧə] abbr.
abrév., pétr. ap; aper
ciném. A measure of the width of the opening allowing light to enter a camera. The apparent diameter of a lens viewed from the position of the object against a diffusely illuminated background is called the "effect aperture". The ratio of focal length of a lens to its "effective aperture" for an object located at infinity is called the "relative aperture", or "f/number". Larger apertures allow more light to enter a camera, hence darker scenes can be recorded. Conversely, smaller apertures allow less light to enter, but have the advantage of creating a large depth of field. See also shutter speed.
aperture
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