this post was submitted on 21 Aug 2024
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Optical Illusions

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3D illusion (i.imgur.com)
submitted 4 months ago* (last edited 4 months ago) by [email protected] to c/[email protected]
 

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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[–] [email protected] 70 points 4 months ago

To me it looks like blue is under the screen

[–] [email protected] 22 points 4 months ago (4 children)

Okay so what's going on here? This is the first time I've seen this illusion without my glasses, though it's stronger with.

I see the blue further back; the red sticks out forward to me. And I've seen that with colours on my screen and - I think - printed colours too sometimes.

Or is this something else, about the blue being a bit fuzzier or something? (In which case my own colour depth separation is something else.)

[–] [email protected] 12 points 4 months ago

Yeah blue looks sunk to me too

[–] [email protected] 3 points 4 months ago (2 children)

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

[–] [email protected] 2 points 4 months ago (2 children)

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.

[–] [email protected] 2 points 4 months ago* (last edited 4 months ago)

https://en.wikipedia.org/wiki/Chromostereopsis

Found courtesy of another comment

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

[–] [email protected] 2 points 4 months ago

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.

[–] over_clox 1 points 4 months ago

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.

[–] [email protected] 1 points 4 months ago

Red and blue are on opposite side of the visible spectrum.

[–] [email protected] 20 points 4 months ago

Wait you guys are getting 3d Effekts from this?

[–] glimse 15 points 4 months ago (1 children)

I can't seem to see this in any way but flat

[–] [email protected] 3 points 4 months ago (2 children)

As with all those illusion it depends on how the brain interpret things... Perhaps your brain is clever than mine to see the image how it really is

[–] glimse 2 points 4 months ago

I can't do Magic Eyes either!

[–] Anticorp 2 points 4 months ago (1 children)

I think it also depends on your viewing screen

[–] over_clox 4 points 4 months ago (1 children)

It's also affected by one's glasses, whether you're nearsighted, farsighted, or just don't wear glasses. The refraction from my nearsighted lenses makes the effect notably stronger, with the blue appearing behind the red.

If I had to spot a guess, the effect is probably reversed with farsighted glasses, but I dunno. 🤷

[–] [email protected] 2 points 4 months ago

Indeed with myopia glasses, I see the red in front like being out of the screen and feeling I can grab it

[–] [email protected] 12 points 4 months ago

Not sure if it's because I just woke up, or if it's dark mode, but looks flat.

[–] chautalees 11 points 4 months ago (1 children)

Chromostereopsis. Pretty cool. Actually works on print too but very easy to observe on displays.

[–] [email protected] 3 points 4 months ago* (last edited 4 months ago)

Thank you!!

https://en.wikipedia.org/wiki/Chromostereopsis

(Edit: now I see OP already added the link)

[–] Tarquinn2049 10 points 4 months ago (1 children)

Hmm, for me, it depends on how close or far the screen is. When it is closer to my eyes, the blue sinks into the screen. When it is far, the blue pops out of the screen towards me.

[–] blueday 1 points 4 months ago

Good catch! It was just behind for me, usually don't have phone too far back.

[–] TriflingToad 5 points 4 months ago

mmmmm not seeing it tbh

[–] over_clox 3 points 4 months ago

It's too early in the morning for brainfucks..

Just take my upvote 👍

[–] [email protected] 2 points 4 months ago
[–] [email protected] 2 points 4 months ago* (last edited 4 months ago)

Way to out yourself as having thick glasses haha.

[–] [email protected] 1 points 4 months ago

Shop Target 🎯

[–] Anticorp 1 points 4 months ago

Woah! This is cool!