You can see Mona Lisa in 3D in this picture if you hold your finger in line with her nose and while looking at your finger bring it to within a few inches of your nose. With your eyes crossed rock your head slightly and the two pictures will merge into a 3D one. This is difficult on a small screen but much easier when viewing these restored pictures full size.
Of the trillions of portraits of people the one on the left is the most famous. The Mona Lisa, painted by Leonardo da Vinci is in the Louvre museum in Paris, France, has millions of people view it every year. That is strange because to see the magic of this picture you need to be able to see her eyes clearly, more clearly than you can when in a crowd at the museum. The effect isn’t because her eyes follow you as you move about, as any picture where the image is looking at you will give that effect. Even my eyes in the picture above will do that. What gives the strangeness is that she is looking behind you, just past your right ear, and the effect is even stronger when you view her in 3D. There is an optical illusion when looking at this image because it is just enough off what is expected that the mind keeps trying to justify what is happening. But that won’t work because this isn’t a human being whose eyes will move about when you move, but a painting with fixed eyes. Thus, a cognitive dissonance occurs within the automatic functioning of our brain, and that gives us a strange feeling. Because I have had access to this phenomenon at high resolution, and know what to watch for, I can see it clearly.
That is why I spent so much time restoring the Mona Lisa. So you can see her magic too.