Hummingbirds, how to film them in slow motion

This video says about itself:

What It Takes to Film Hummingbirds in Slow Motion | National Geographic

28 July 2017

Once, high-speed cameras were ungainly contraptions, difficult to operate and lug into the field. Now they can fit in a large pocket and are as essential to hummingbird biologists as binoculars are. The sheer magnitude of information captured by these cameras can be hard to fathom.

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