The evolution of the aesthetic and economic value of a photographic print has been set up by a temporality, which takes 1980s as a starting point for the research. Our aim is to emphasize historical aspects as well as economical, aesthetic and theoretical ones, which have made structuring of a photography art market possible which has become a place of approval and legitimization. Photography has acquired a new status and is considered as a work of art. To what extent the medium can be qualified as an artwork and what are its new modes of existence in a newly structured and mutating market?Thinking “the value”, its definition and its determination in the case of the photographic work has been at the heart of the research. The value has been considered under two aspects linked together in a mutually dependent relationship: aesthetic and economic value. Hence the issue: what are the basis for setting up the aesthetic and economic value of photographic works on the art market?The issue is then to enlighten an artistic reality made of multiple “crossed strategies”, real as well as symbolical, which contribute to the constitution of an aesthetic of photographic art in connection with the art market. And thus, to an ongoing adjustment of a scale of values driven by both uncertainty of aesthetic values and the obligations of the market stake.