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How Do $50k Movie Camera Lenses Work?

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 Science   |   Technology
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Video camera lenses are the perfect combo of modern technology and old fashioned craftsmanship. 8 overlapping stainless steel pieces control the amount of light that is let into the camera.

MACHINES: HOW THEY WORK
http://www.sciencechannel.com/tv-shows/machines-how-they-work/

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