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Aperture Foundation | Home
The not-for-profit arts institution dedicated to advancing fine photography, publishing a magazine and books, presenting a diverse selection of photographs and texts offering ...
Apple - Aperture
Aperture 2 offers photographers a streamlined way to speed through edits, make essential adjustments, and deliver photos online and in print.
Aperture Foundation | Aperture Magazine
The award-winning fine-art photography magazine featuring the work of the worldb s most important photographers plus articles by prominent art scholars, critics and writers.

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Aperture, in optics, the opening of a lens through which light can enter. In photography, the relative aperture, or f number, is the ratio of the diameter of the effective aperture—that is, the diameter of the widest ray of light that can enter the lens—to the lens's focal length.