1. autofocus

noun. an optical device for focussing a camera or other instrument automatically.


  • auto- (English)
  • αὐτo- (Ancient Greek (to 1453))
  • focus (English)
  • focus (Latin)

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Sentences with autofocus

1. Noun, singular or mass
The stock Android Camera app includes an autofocus feature that attempts to lock on the subject of each picture and bring it into focus.

2. Verb, base form
Turn your camera on and allow the camera to autofocus the lens a few times to be sure.

3. Adjective
If your lens is autofocus or a new lens that works through electronic contacts, look for a wiring harness that will be connected to the mounting ring.

4. Preposition or subordinating conjunction
Displayed on a screen -- a permanent or portable optical-quality sheet covered in tiny glass beads -- the projector's output maintains autofocus and can proceed automatically through an entire carousel of slides.