from this thread – it’s certainly one of the best ones i’ve seen.
the square labled “A” and the square labeled “B” are the SAME COLOR
don’t believe it?
I tried to do a little photoshop trick.
Still don’t believe it? You should save the picture and use a paint program and use the color selection tool to test. It’s incredible how our eyes deceive us.
Pure-Essence.Net 
Wow, they do look the same through squinted eyes. That makes sense, because you can focus better on the two squares and not all the busyness around them, which creates the illusion in the first place.
Yes, as the saying goes “dont beleive everything you see”… So true
that’s crazy i was just looking at that on another site…..neat stuff
i still dont get it X_X
also if you dont mind could i put your link on my blog/xanga cus i really like reading you stuff ^_^
what don’t you get? pure essence is link free.
Wha’?! That’s just scary!
i saved it and opened it on psp and used the eyedrop and they are the same : #6B696B ..that is very weird because one look much more lighter.
Whoa…. cool. 😀
That’s crazy!! 😀 even though i tested it with photoshop, i still can’t believe it! XD
Wow! That’s truly amazing.
crazy 🙂 we had to take it into ps to see for ourselves 😉 very cool
This is a very clever 3D rendering that plays with a popular optical illusion. I don’t agree with the theory that our eyes decieve us; our eyes actually have learned to compare spatially related objects and are doing the work on the fly so as we don’t have to think about it — if you wan’t to short circuit this automated process, try squinting your eyes and looking at the image through your eyelashes (a common artists technique) This will focus your eyes on the greys, eliminate most of the colors and in order to make out what is blurry, your eyes/brain will make thier decision based on contrast. The squares do look alike through squinted eyes.
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Rob_-
That’s amazing!
ok. i still don’t believe it. my eyes don’t work! eep!
that is so cool! its so weired though.
its true its really true! guess u cant beleive everything u see… right?
While it’s true the squares may come up as the same color in a paint program, there is one simple piece of evidence that proves square B is in fact, lighter.
Square B is covered in a shadow from the cylinder…. Making the color shone in the picture darker than the actual color of square B…
Which would make the actual color of square B lighter than square A.