Citation

Ashida H, Kitaoka A. Iperception 2023; 14(4): e20416695231187800.

Copyright

(Copyright © 2023, SAGE Publishing)

DOI

10.1177/20416695231187800

PMID

37745725

PMCID

PMC10515532

Abstract

A movie taken from the front window of a running train, with zooming in and out, has been popularly acknowledged as a perceptual illusion such that the train motion is perceived as much slower when zoomed in. This is, however, not a real illusion because the image speed varies as a function of the focal length of the lens. This could be a meta-illusion, that is, an illusory sense of illusion, that might reflect a lack of understanding of how zooming changes the geometrical structure of the image.

Language: en

Keywords

illusion; motion; speed; zoom lens