Born in Amatrice, Province of Rieti, Di Giacomo started his career as assistant of Aldo Tonti.
[1] For many years he worked as an operator, notably collaborating to Joseph L. Mankiewicz's Cleopatra, Vittorio De Sica's Marriage Italian Style and Sergio Leone's The Good, the Bad and the Ugly and Once Upon a Time in the West.
[1] Di Giacomo made his debut as a cinematographer in 1970, with Salvatore Samperi's Kill the Fatted Calf and Roast It.
[1] In 1983, he won the David di Donatello for Best Cinematography for Paolo and Vittorio Taviani's The Night of the Shooting Stars.
[1][2] He also worked, among others, with Nanni Moretti, Ettore Scola, Marco Bellocchio, Michael Radford, Bernardo Bertolucci, Dino Risi, Nikita Mikhalkov and Mario Monicelli.