Photograms : Contact Photography

When you make photograms, without the use of a camera, you can indeed call that abstract photography, as the lens and the corresponding registration medium are lacking. No longer do you have pictures of reality or objects; you only have their shadows. It is a bit like Plato’s cave, where one could only imagine reality; the objects themselves were not visible.
—Thomas Ruff

Photogram from Victorian corset.

Found Objects : Archaeological Photogram

Camera Obscura : Interior of the Pottery at Kilquhanity

Spatial Photogram