Expert Eye: Isaac Julien shares his favourite works at Art Basel in Miami Beach

Sally Mann’s photographs, Edwynn Houk: “I had a conversation with Sally Mann when I was doing conservation work for the film Looking for Langston (1989). She was the one who told me about this amazing black-and-white photography conservation specialist who could reconstruct negatives from digital files. It was that conversation that started the series of work I did on Langston [Hughes]. Mann is a master of photography, and she was very instructional for me.”