Images made with a camera don't give much detail. In contrast, camera-less photographs show what has never really existed. They are also always an original because they are not made from a negative. Encountered as fragments, traces, signs, memories or dreams, they leave room for the imagination, transforming the world of objects into a world of visions.
Photograms were used a lot in the 20th century by a number of photographers. A photogram is a photographic image made without a camera by placing objects directly onto the surface on a light sensitive material such as photographic paper then exposing it to the light. The usual result in a negative shadow image that shows variations in tone that depends upon the transparency of the objects used. Areas of the paper that have received no light appear white those exposed through transparent or semi-transparent objects appear grey. which he made by placing leaves and pieces of material onto sensitive paper, then left them outdoors on a sunny day to expose. This produced a dark background with a white silhouette of the object used. Camera-less photographs can be made using a variety of techniques, the most common of which are the photogram, the photo and the chemigram. These techniques are sometimes used in combination, Many involve an element of chance..