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24th Nov 2011 - How does autofocus work?

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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Supercomputers & Super Computing	Science from a plane, and forecasting space storms	Do My Eyes have Anti-Shake Vision?
How does autofocus work?	My girlfriend and I were having a discussion recently about how automated society is becoming. She ...	Chilling Out - The Science of Cryogenics
Outpacing Petrol - Biofuels and Hydrogen	Do planes trigger rains?	Hi, I just wondered if I was stranded somewhere and I wanted to start a fire using camera lenses,...
The French Teaching Kitchen	Metallurgy - Metals at the Molecular Scale	The Hygiene Hypothesis Part 2: Will Whipworm Work?

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