autofocus

[aw-toh-foh-kuhs]
adjective
1.
having the ability to focus automatically: an autofocus lens; an autofocus camera.
noun
2.
such an ability.
Also, auto-focus.


Origin:
1955–60; auto-3 + focus

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
autofocus (ˈɔːtəʊˌfəʊkəs)
 
n
another name for automatic focus

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
High-quality cameras all employ the same basic system for automatic focusing,
  known as phase-detection autofocus.
Even the best lenses and cameras struggle to autofocus on fast action in low
  light.
It doesn't focus on the entire scene, only the portion of the scene in the
  autofocus box.
Keep your camera set on auto-exposure and autofocus.
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