If you take a photo of something, does that photo show reality? What is there?
Most of us believe so but actually, the photo only shows what was there when you pressed the button. This misconception led to the Image Fulgurator. What's that? It's a device which projects a picture when it notices a flashlight, i.e. when someone makes a photo. Because of the flash, you can't see the image of the Fulgurator, but you will see it later on your photo. The photo shows what was there, not what is there.