Beware an optical illusion’s effect on your paintings and drawings

Your eyes are deceiving you! In 1995, an optical illusion published by Edward H. Adelson, a Professor of Vision Science at MIT, drew attention to the fact that our eyes perceive how light or dark an object is based on the lightness or darkness of its neighbouring objects. If you are seeing the illusion below for the first time, you would probably call me crazy if I told you that Square A and