CHRISTOPH KELLER Christoph Keller, Introduction | Page 5

medium specificity has been widely contested, the engagement with the specificity of a medium has surfaced as important mark of artistic sophistication and rigor. In her groundbreaking 1978 essay, art historian Rosalind Krauss wrote: “But what appears as eclectic from one point of view can be seen as rigorously logical from another. For, within the situation of postmodernism, practice is not defined in relation to a given medium—sculpture—but rather in relation to the logical operations on a set of cultural terms, for which any medium—photography, books, lines on walls, mirrors, or sculpture itself—might be used.” 5 Exhibition View: Grey Magic, Esther Schipper, Berlin, 2015 Artists such as Keller who choose to deliberately employ the specificity of a medium according to each individual project appear especially attentive to a medium’s highly charged histories of forms, significance of technological methods, and the plethora of art historical, cultural and social connotations. At its most reflective and conceptually nimble, this approach of articulating each project through a formal execution appropriate to its conceptual basis, allows Keller to employ a medium as richly connotative sign. For Keller working with multiple mediums has become an integral part of his practice, incorporating their associative histories and contiguous meanings into the projects. This might include epistemological models from diverse and distinct disciplines: anthropology, behavioral theories, physics, the history of science, fringe or pseudo scientific explorations, or the development of technological apparatuses and media studies. The formal heterogeneity coheres around the artist’s rigorous attention to the structural logic of each operation: form, medium, installation, and conditions of display are carefully coordinated, their individual connotations orchestrated to achieve coalescence while still preserving the works’ openness. The artist’s sustained thinking about media and photography (perceived in its theoretical definition as a practice that, along with the givens imposed by its technological apparatuses, also determines the conditions of its production, distribution, and reception) exemplifies Keller’s play with the complex associations of a medium. Combining elements of the photographic and cinematic, in his early career Keller invented processes for recording time photographically: devising cameras that transported the film during exposure, creating what the artist called Rundumbilder (all- around pictures) that registered movement and by implication time. Working to overcome the limitations of the medium—influenced by experimental and structuralist filmmakers such as Bruce Connor, Maya Deren, or Stan Brakhage—the apparatus determined the parameters of the formal outcome. 6 The images seem to dissolve the photographer’s perspective into a temporal continuum, a technologically assisted process that invokes psychological operations, namely the dissolution of an unchanging self, and an awareness of its motion in time and space. The extensive series of Rundumbilder photographs—almost constituting an archive itself—addressed contemporaneous theoretical discussions, such as the indexicality of photography, the durational condition of cinema, the experiential aspect of viewing art, and the dissolution of the authorial subject. Detail: Menschen am Alex, 2000, Lambda-Color 13,2 x 123 cm (CK 038) 5