This famous self portrait photo of Laura Williams is not a real optical illusion. It is actually photoshopped.
Laura: “It is a mirror and I used a little self-timer remote to take a photo of me sitting down holding the mirror, then I took another picture without me in it, so just the background. I masked that photo on top of the one with me in it, so that the background was in the frame and that filled in the gap and it gave the illusion that I was invisible.”
