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From The Glossary of Digital Photography
The point at which the aperture is as large as possible for a given lens. Achieving this is usually done by using the smallest number (f-number) on the lens barrel.
ONLINE GLOSSARY OF DIGITAL PHOTOGRAPY
The point at which the aperture is as large as possible for a given lens. Achieving this is usually done by using the smallest number (f-number) on the lens barrel.
