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f-stop

or f stop

[ef-stop]
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noun Photography.
  1. the setting of an adjustable lens aperture, as indicated by an f number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for f-stop

f-stop

noun
  1. any of the settings for the f-number of a camera
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012