‘Witness,’ HBO Documentary Series on War Photographers

“Witness: Juarez,” the first in a series of four HBO documentaries about contemporary war photographers, is the visual equivalent of a fast-paced duet, like Mozart for still camera and video camera rather than violin and viola. The photographer Eros Hoagland and the cinematographer Jared Moossy travel the deadly streets of Ciudad Juárez, Mexico, in tandem, and our view jumps between their lenses; their photographs and moving images echo and amplify one another.