A demo of the foot-step illusion (Anstis)pic.twitter.com/HhJdxcNvRR
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Weirdly I get part of the effect but not all of it. Like, to me it appears concave, but also above the surround - like a bowl sitting on a table.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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The effect works a lot better for me when I turn the image upside down
Thanks. Twitter will use this to make your timeline better. UndoUndo
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