[MP-Ryan]

If you wear glasses, then look at this image while turning your head left and right.  You should see the tiles change color.  Kinda neat, mostly useless.

Glasses aren't required; I have 20/20 vision and can still detect a colour shift.

[CP5670]

I get that effect on many normal objects in real life if I look out of the corner of my glasses. It's especially noticeable around high contrast boundaries, like a piece of paper on a dark table.

[castor]

You mean the actual letters, right?

No, the squares. They're both 120, 120, 120.

Sure. I thought Swantz meant the letters -- "A and B looked the same color to me at first glance". I guess he just got an extraordinary eyesight.

[watsisname]

If you wear glasses, then look at this image while turning your head left and right.  You should see the tiles change color.  Kinda neat, mostly useless.

Glasses aren't required; I have 20/20 vision and can still detect a colour shift.

Weird, if I try it without my glasses I detect little or no color shift at all.  Guess it goes to show everyone sees differently.

[Dark RevenantX]

I can see the color shift without glasses...

Perhaps I need some?

[CP5670]

I can't see it without my glasses, but that is only because everything becomes an unrecognizable blur.

[jr2]

I can't see it without my glasses, but that is only because everything becomes an unrecognizable blur.

Alright, let's see if this works, all people who use glasses, try this.

[castor]

Ahh yes, the pinhole glasses

They do work. Not very practical for common use though, due to the dark image and minimal field of vision.