“Aperture is a hole or an opening through which light is admitted or more specifically in photography how wide open the shutter remains when the shutter is released.” – Wikipedia
The ratio of the lens focal length to the effective aperture provides the f/stop value. (see Photo Term Series Post #6: f-stop, f/stop or f-number)
[tags]aperture, f-stop, f/stop, photography, term, photo, terminology[/tags]
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