How does autofocus work? - Science Scrapbook 11.11.24

from Naked Science Scrapbook Hosted by Dr Chris Smith, The Naked Scientists

Millions of people now own compact digital cameras and camera phones that will automatically focus on parts of a scene, without having to turn a focus wheel. But how does autofocus work? In this Naked Science Scrapbook we find out how battleship technology has found its way into cameras and why some autofocus cameras use ultrasound to figure out what to focus on...

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How does autofocus work? - Science Scrapbook 11.11.24

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This episode is 4 minutes long.

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This episode was published on November 24, 2011.

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