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3D illusion(i.imgur.com)

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fievel@lemm.ee
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opticalillusions@feddit.nl
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While this is just a static 2d image, it looks like blue is above the screen (for me, for some others it’s below, or red is above).

Thanks to comments, here some explanations https://en.wikipedia.org/wiki/Chromostereopsis

Edited: added Wikipedia link

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BossDj@lemm.ee
3 points

I’m guessing it’s the fuzziness of the blue one (less focus), but also both red segments being wider/thicker so your brain rationalizes that blue is further away

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over_clox@lemmy.world
1 point

Blue isn’t fuzzy or blurry though. It’s just as crisp and sharp as red, digitally speaking.

But yes, without glasses, I get the same sort of experience, where the blue gets blurry before the red.

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usualsuspect191@lemmy.ca
2 points

I’ve noticed this effect on business signs so I don’t think that’s the cause. Blue specifically seems affected, and you can notice a parallax difference too even when they’re the same distance. I assumed it had to do with my glasses bending the light differently or something.

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milicent_bystandr@lemm.ee
2 points

I’ve definitely seen it when the colours are in focus/sharpness the same, e.g. with red words on my phone screen standing out in front of the rest.

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milicent_bystandr@lemm.ee
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https://en.wikipedia.org/wiki/Chromostereopsis

Found courtesy of another comment

Edit: oh and now I see OP also already got the link

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