In 1975 he undertook extended documentation of subjects never before broached in France; the first, “L’Hopital” was published in 1976; the second, “Les Incarcérés”, on French prisons was made in 1976 and published in 1983 with extracts from his personal journal written in the first person. In 1976 his work was noticed by Marc Riboud and Bruno Barbey at Rencontres d’Arles and at their invitation in 1977 he joined Magnum.