Field is a Journalist and television presenter. He became a co-presenter of Panomara, a radio programme on France Culture. He was a contributor to Les Nouvelles littéraires from 1984 to 1985. In 1992, he became a co-presenter on Ciel mon mardi!. He subsequently presented Le Cercle de minuit and Ça balance à Paris, followed by Au Field de la nuit on TF1 and Ring on LCI. He has been a co-presenter of Médiapolis alongside Olivier Duhamel on Europe 1 since 2007. He later served as the head of France 5. Since December 2015, he has served as the political Director of France Télévisions.