NEW DELHI, April 16 -- PG Wodehouse famously said there were two ways to write a novel, as "a sort of musical comedy without music" or "going deep down into life and not caring a damn". If one were to adapt this to documentary cinema, the two strains might be: films that show us wonders and films that reveal something about the human condition.

Of the five films nominated for Best Documentary Feature at the Oscars (26 April), Garrett Bradley's Time goes deep into life and James Reed and Pippa Ehrlich's My Octopus Teacher shows us wonders.

Bradley approached Sibil Fox Richardson, known as Fox Rich, to make a short film on her in 2016. Sibil and her husband, Robert, had gone to prison in Louisiana for attempting to rob a bank after the fami...