We live with films every day, and it seems nothing easier than answering the question: what is a film? Obviously, a film is, first and foremost, a document, a testimony of the world that surrounds us. The rich expressional possibilities of film are based on the imperfection of the human eye, its sluggishness, so thanks to the stroboscopic effect we can animate a still image. Film is therefore a kinetic image, or a moving image. It can make the invisible visible, bring the distant closer, enlarge...