If a cross-section of documentary filmmakers were offered access to live performances, behind-the-scenes footage and even private phone calls during a couple of years in the life and career of John Lennon, it’s unlikely that many of them would choose the period of 1971-1972. That was when Lennon and his wife, Yoko Ono, got heavily into political causes and made “Some Time in New York City,” an unwieldy and hamfisted slice of rock ‘n’ roll agitprop that long ago secured its reputation as the worst album of Lennon’s career.
But that’s the period that director Kevin Macdonald and co-director Sam Rice-Edwards had to work with to make “One to One: John & Yoko,” which had its world premiere at the Venice Film Festival on Friday and will also play in Telluride this weekend.