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Old 19th Apr 2018, 17:07
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DaveReidUK
 
Join Date: Jan 2008
Location: Reading, UK
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At takeoff, an ATR prop is turning at 1200 rpm. That's 120 blades per second, so a frame rate of 20 or 24 fps, for example, will produce the static effect.

Trickier with a Shorts 360 (1675 PRPM, I seem to recall).
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