Black and white photo became color: optical illusion

More and more often, life proves to us that we should not even trust our eyesight. Our perception of colors can be erratic and misinformation. And here’s another example.

♥ BY TOPIC: There are 16 circles in this picture, can you see them?

Take a look above at this black and white photograph of the gloomy Dunstanburg Castle. Now, without looking away or blinking, for 15 seconds, look in the center at the image (GIF-animation) below.

Soon the colorized picture will change to black and white, but our brain will process it as full color. If this illusion does not go away after five seconds, then you just need to blink a few times. But if this does not help, then it is better to tear yourself away from the screen for a while in order to bring your eyesight and nerves in order.

This optical illusion will make a black and white photo in color.

The “trick” of the illusion is that after changing the color picture to black and white for a few seconds, we see the photo in full color. And this behavior of our body is understandable. There are three types of photoreceptors in human eyes. The most highly sensitive rods help a person see better at night, the less sensitive receptors are responsible for daytime vision, and the third cones are responsible for color perception. Best of all, these cones perceive the blue, green and red parts of the spectrum.

In this case, we are invited to look at a picture with clearly saturated colors. This sight leads to overstrain of the cones, they stop responding for some time. The receptors remaining in the system at the time of displaying a black-and-white photo show opposite colors. This is how an unusual illusion appears.

PS. Do not be afraid that our brain somehow changes the color picture to black and white – this is how an animated picture (GIF) behaves. And the essence of the illusion is in the “coloring” of a black-and-white canvas after contemplating an oversaturated base

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