The Camera Obscura is a dark room with a tiny hole through which light streams. The things, objects, people in front of the hole appear upside down in vivid color on the opposite walls.  This is the basic principle of the camera. What happens when you go inside a camera?  At first it is completely dark, slowly the room lights up, objects and people from the outside world become visible, and you can walk on the clouds, the road or the river is on the ceiling, and everything is in color and moving. This is not an illusion, this is reality. I can’t interfere, I am “just” an observer. If I go outside and walk a little bit in front of the hole, I become visible, for those who are inside.