Camera-less photographs can be made using a variety of techniques, the most common of which are the photogram, the luminogram and the chemigram. These techniques are sometimes used in combination. Many involve an element of chance.
This is pretty much the most terrifying thing to me. But I kinda like this picture. I wonder if I hung it up in my room if it would eventually make me less afraid of scary ass dogs. ...that or I would have absolutely terrifying, shit-in-my-sleep dreams.