Authors:

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.

László Moholy-Nagy, Renate Heyne, Hattula Moholy-Nagy, Herbert Molderings (2009). “Moholy-Nagy: the photograms : catalogue raisonné”, Hatje Cantz Pub
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.