After five years of studying medicine, he delved into photography in 1985, at the age of twenty-five. Then came a long period in the world of fashion and advertising. In terms of his personal work, he really started studying the portrait when he photographed the hands of his uncle, a farm-worker. His intention is to shed light on the time of tradition and the past expressed through people. The specificity of Denis’s material is to establish a special link between the subject and the photographer. Between 2009 and 2012, the Foundation Alstom commissioned him to work on the theme of sustainable development as applied to some of the foundation’s projects in India, South Africa, China, Indonesia and Brazil, for a travelling exhibition and a printed work. His adopted approach was very close to that of his own work, which he continues to pursue unwaveringly. Denis worked with the following clients: Hermès, Rolex, Moët et Chandon, BMW, Toyota, Axa, EDF, Crédit Agricole, Crédit municipal, CNP, Suez Environnement, Rhum Clément, Sanofi Aventis, Alstom, OPP BTP, Kuoni, Lissac, Albin Michel, Fayard, Levi’s, Saint Laurent, Lili Gaufrette, IKKS, etc. He is an author of multiple exhibitions; here are some of them: - “Ouatialy” and “Bankoro” (dedicated to the authentic, traditional culture of Mali ) - “Regards” (dedicated to the people of Morocco, Mauritius and Saint Martin) - “The folds of life” (commissioned by Hermès, a study of the link between the folds on the bark of trees and those on faces); - “Hermès dans le étoiles” (a voyage into the very centre of the look) - and many others, entitled « The thread of life » and « Harmonies », dedicated to South Africa, Guinea, Ireland, Guatemala, China, Indonesia, Indian ethnic groups : the Dalits and the forest tribes.