Étienne Caire aka Riojim runs the Atelier MTK in Grenoble, France where he teaches DIY film processing, contact and optical printing and editing. He is particularly attracted to abstract animation, the pleasure of physically modifying images on the film via twisted and other chemical treatments frowned on by professional labs. He pushes the possibilities of the emulsion to the edge. The material produced in the laboratory becomes a work of improvisation integrating all the parameters of projection. By means of prepared projectors, he applies severe treatment to the projector and plays with the film and the homemade optical sound on film to create a real visual music.