Back in Junewe spotted a videothat had us nonplus : a few orotund - looking configuration look as squares in a mirror . rotate them 180 academic degree produced the opposite result . Was it wizardry ? CGI ? Almost a calendar month later , we finally have our answer .
Captain Disillusionis a YouTuber best known for debunking viral hoaxes . But much to our — and potentially his — surprise , the ambiguous cylinder trick is n’t the issue of digital effects hanky panky . The secret lies in perspective cues and some very , very careful planning .
For starters , none of the shape are truly round or square , they ’re somewhere in between . So already your brain has to work a little harder to make up one’s mind what it ’s search at . The truly cagy bit is that the top surface of these pattern are n’t flat . Each is compose of rolling , s - shaped hills and valley that , when viewed from the correct slant , have the effect of lengthening or shortening certain side . In the original video you’re able to almost make them out , now that you know what to look for .
But these tricks of building are n’t enough on their own . Proper lighting has to be used to ensure that the shapes ’ shadows do n’t give the closed book away . Even the television camera ’s specification have to be taken into story , because the accurate dimension of the shapes are determined in part by the focal distance of the lens being used to take the trick .
Would it have been easygoing with digital use ? No doubt . That or the head game could ’ve been shot in multiple takes . But knowing that this nous - turn fast one is legit induce it all the more telling .
Illusion
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