The film UMBRA deals with rare and common optical phenomena that occur in nature. These phenomena evoke familiar images such as shadows or reflections on a water surface; but also unusual ones like the "Brocken spectre" or the pinhole effect during a solar eclipse. These ancient and natural projections can be considered as pre-cultural and independent of any apparatus. They occured even before mankind and are united by their intangible, ephemeral presence. UMBRA develops a visual dialogue between phenomenon and apparatus, archetype and image, self and self-perception.