After last year's negatives, the Atelier de Restauration et de Conservation des Photographies de la Ville de Paris (Photography Conservation and Restoration Studio) has chosen this year to unveil its restoration work on the colour slide medium. The teams will be presenting exceptional prints from the "C'était Paris en 1970" collection held by the Bibliothèque Historique de la Ville de Paris (BHVP). This amateur photographic competition enabled the capital to be photographed in 1970 in 250m x 250m squares. Of the 15,000 candidates, a total of 2,800 photographers produced nearly 30,000 slides reflecting Paris from a wide variety of perspectives.