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Chubb Illusion — The same central texture appears to have different contrast.
Look closely. Let the image settle.
Light & contrast / 1989

Chubb Illusion

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The same central texture appears to have different contrast.

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Compare the contrast of the two central disks, then cover their surroundings.

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History, evidence & image credit

THE IMAGE IN THIS ARCHIVE

w:User:EyesDude https://en.wikipedia.org/wiki/User:EyesDude

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Frequently asked questions

What is Chubb Illusion?

The same central texture appears to have different contrast.

What should I look for in Chubb Illusion?

Compare the contrast of the two central disks, then cover their surroundings.

What explains Chubb Illusion?

A high-contrast surround can make a central texture seem flatter than an identical texture against a uniform surround.

Another way to see it

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Black dots flicker across a grid of white dots.

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Chubb Illusion — The same central texture appears to have different contrast.

Chubb Illusion