In August 2015, photographers Peter Rauch and Peter Koštrun took up the roles of curators at the Celje FOKUS Festival. At the exhibition, which they named Sondiranje (Probing), they compiled a collection of photographs of foreign, anonymous and unknown authors. The collection consists of artifacts collected by the authors in their archives over the years and was, upon receiving the invitation to participate, selected on the basis of their fascination with these artifacts. At one point in time, all the photos served their particular functions: advertising, family, propaganda, artistic expression, etc. The authors highlighted the alternative possibilities for interpreting such images, which may have, due to the time that has elapsed, been exempt from the first context because of  the past time, perhaps due to the lack of signatures or the manner of presentation. Their assumption was that engaging viewers would break up the long, uniquely justified ways of understanding photographic material. Visiting authors and collectors were also invited to participate.