The specimens were placed on an acrylic board and were kept in focus by simultaneously moving the board on the table to maintain their position in the frame. High-speed cameras (Phantom V1611, Nobby Tech. Ltd.; VW9000, KEYENCE CORPORATION; and HAS-L2, DITECT Co., Ltd.) were used to acquire slow-motion movies. The wing-deploying scenes (Movie S1) were filmed using 3,000 and 4,000 frames per second (fps), whereas the folding scenes (Movie S2) used 60 fps.
Ha ha ha ha. The comments section of that vid are absolute gold. Cackling like a mad woman reading themA semi famous Canadian YouTuber who is into electronics, maching, and other related areas of interest.
If you are bothered by foul language, or non-political correctness , you probably want to avoid this guy.