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depth of field

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noun Optics, Photography.
  1. the range of distances along the axis of an optical instrument, usually a camera lens, through which an object will produce a relatively distinct image.

Origin of depth of field

First recorded in 1910–15
Also called depth of focus.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for depth of field

depth of field

noun
  1. the range of distance in front of and behind an object focused by an optical instrument, such as a camera or microscope, within which other objects will also appear clear and sharply defined in the resulting imageCompare depth of focus
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