To describe the events spreading out in Aurore, in Royaume and in Bleu, suitable tools still have to be found ; up until now, nothing much has been said or done about a cinema that quite specifically deals with picture as a sensation. Then one can always attempt, as plainly as possible, to draw a few lines, trying to single out a few dimensions, a few questions, a few perspectives that run through these films and relate them to the history of pictures and cinema.