Estrin started his career in the 1970s. His first work was a documentary feature about the photographer Imogen Cunningham. Later he also edited feature films such as The Candidate (1972), Badlands (1973) and Memory of Us (1974). His last work was the cut of the 1995 comedy film The Perez Family.
Estrin's sister Sandra Adair also works as a film editor.[1]