At the local premiere of “The Town” a few years back, Ben Affleck said he was done filming in South Boston. The next movie, he insisted, would be shot entirely in Allston.

He was kidding, of course. Affleck, who also directed “Gone Baby Gone” in South Boston, has moved far beyond the Old Harbor Housing Project in his new movie, “Argo.” The film, about a CIA “exfiltration” of six Americans from Iran in 1979, was largely shot in Istanbul, Washington, D.C., and Los Angeles.