depth of field

noun Optics, Photography.

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.

Nearby words

  1. deptford pink,
  2. depth,
  3. depth charge,
  4. depth finder,
  5. depth gauge,
  6. depth of focus,
  7. depth perception,
  8. depth psychology,
  9. depth sounder,
  10. depurate

Origin of depth of field

First recorded in 1910–15

Also called depth of focus. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for depth of focus

depth of focus


the amount by which the distance between the camera lens and the film can be altered without the resulting image appearing blurredCompare depth of field

depth of field


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

Medicine definitions for depth of focus

depth of focus


focal depth

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.