It has been four years since I completed the Mona Lisa in three dimensions and briefly displayed her in Dudley’s Bookshop Cafe, here in Bend, Oregon. (For best online results when viewing use a large desktop screen.) It is time for her to visit the world.
Paris Mona Lisa on the left, the Madrid one on the right.
Her eyes follow you as you move slowly side to side, up and down, and tilting your head around your nose. If you are looking into her eyes, her nose and face turn with you as you make those movements. The effect can be seen in the single Louvre portrait above, but it is even more pronounced when you have a human-size 3D, Louvre/Prado portrait before you. For more discussion, view Mona Lisa at Probaway.
I have summarized this material for quick viewing by art historians.