How does autofocus work? - Naked Science Scrapbook

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Uploaded by on Nov 24, 2011

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...More videos and podcasts from http://www.thenakedscientists.com

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  • Usefull info

  • very informative

  • GREAT!! I HAVE BEEN SEARCHING FOR THIS INFORMATIONS FROM A LONG TIME AGO... THANX ALOT GUYS FOR SHARING THE INFORMATIONS!!!

  • WOW, CRAZY INFORMATION HERE. ITS AMAZING HOW MUCH TECHNOLOGY HAS CHANGED, EVEN WITHIN THE LAST 20 OR SO YEARS. LETS ALL KEEP TALKING IN CAPITAL LETTERS THOUGH.

  • LOVELY!!!!!!!!!!!!!!!!!! KEEP UP THE GOOD WORK!

  • WOW I DONT KNOW THE PRINCIPLES BEHIND IT IS SO COMPLICATED! I JUST PRESS THE BUTTON AND PHOTOS DONE! GREAT JOB HERE!!

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