Both ''Ambiguous Medium'' and also ''A long, detailed story'' in Latin, Media Ambages headlines a manifesto about photography and moving image. What is the stuff of image? The show, curated by Nat Tafelmacher - Magnat, explores how this intangible medium, not at all a clean window opening onto a clearly definable reality, instead becomes, for the viewers' private kinos in their minds, a projection surface, a mirror, creating ''realities'' - the witnesses' very own stories - out of thin pixel and paper.