The photogram, or camera-less record of forms produced by light, which embodies the unique nature of the photographic process, is the real key to photography. It allows us to capture the patterned interplay of light on a sheet of sensitised paper without recourse to any apparatus. The photogram opens up perspectives of a hitherto wholly unknown morphosis governed by optical laws peculiar to itself. It is the most completely dematerialised medium which the new vision commands.