Helicopter Blades Look Weird On Video Thanks To Frame Rates
If you've ever seen a helicopter flying on camera, perhaps you've noticed something that doesn't look quite right. The blades of the helicopter can appear to be moving backwards, very slowly, or not even moving at all. The blades really are spinning around pretty quickly, don't worry. The frame rates and shutter speed of the camera are to blame. Learn the details in the video below.
Why Helicopter Blades Can Look Strange On Video
Sometimes they appear to be moving weirdly slow.
from Brain Stuff
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