The Vista paradox, sometimes colloquially referred to as the Sydney Opera House illusion after a video from digital content creator Vsauce, is a natural optical illusionJames T. Walker, Reta C. Rupich, Jack L. Powell, "The Vista paradox: A natural visual illusion", in Perception & Psychophysics, 1989, 45 (1), p. 43 where an object seen through an aperture (such as a window) appears to shrink in apparent size as the observer approaches the aperture.Marco Costa, Leonardo Bonetti, "Linear Perspective and Framing in the Vista paradox", in Sage Journals, Vol. 46, Issue 11 The paradox takes place when the distant object that seems to be shrinking or enlarging as its visual angle respectively increases or decreases is many times further away than the maximum distance between the observer and the aperture.
See also Depth perception Forced perspective Perceived visual angle Perspective distortion (photography)
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