This historical work focuses on the theory of photography. It is divided into three autonomous episodes chronologically correspond to three historical stages. These parts are connected with one genealogies of one possible reading of the photography. The first part deals with the historical circumstances and causes of the birth of photography. The second phase describes the later period of history of the Weimar Republic and photographic movement of Neue Sachlichkeit. The last part concentrates on Düsseldorf School of Photography and its current followers. These historical eras combines the aesthetic issues of cult and conceptual values, which is demonstrated on the way how read the photographic medium as a specific aesthetic phenomenon.