What I want you to do (once again) is to stare at this negative photo of this lady for a minute or so. Don’t forget to fixate the dots on her nose while you’re doing it. After some time, turn your eyes to a plain surface right next to the image (a ceiling or a blank wall would serve fine as well). A “negative of a negative“, a proper image in full-color if you will, will then appear momentarily. The more you blink, the better afterimage effect you’ll experience!
