KO/4Photography: Watch This: A Look Inside Canon’s Massive 200-400mm F/4L IS Zoom Lens With Built-In Extender

Monday, June 6, 2016

Watch This: A Look Inside Canon’s Massive 200-400mm F/4L IS Zoom Lens With Built-In Extender

Canon 200-400mm telephoto zoom lens exploded video

Get inside one of the most complex camera lenses on the market

This video exposes the intricate internal workings of Canon 200-400mm F/4L IS USM lens with built-in teleconverter…

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