A Photogram is a photographic image made without a camera by placing objects directly onto the surface of a light sensitive material such as photographic paper and then exposing it to light.
Man Ray.
Ran May was an American visual artist who spent most of his career in France. He was a significant contributor to the Dada and Surrealist movements. Man Ray used objects like thumbtacks, coil of wire and other circular forms.
Laszolo moholy nagy He was a Hungarian painter and photograph as well as a professor in the Bauhaus school. He was highly influenced by constructivism and a strong advocate of the integration of technology and industry into the arts. Laszolo moholy nagy used a lot of body parts.
In Laszolo Moholy Nagy's images he uses human parts a lot but in Man Ray's images he used objects that people use on a daily basis.
What are Rayographs? Man Ray mad his rayogram without a camera by placing objects directly on a sheet of photosensitized paper and exposing it to light.