The fear of monsoon rain had forced the art director, Bansi Chandragupta, to abandon the original plan to build the inner courtyard of a typical Benares house in the open and the set was built inside a studio in Calcutta. Mitra recalls arguing in vain with both Chandragupta and Ray about the impossibilities of simulating shadowless diffused skylight. But this led him to innovate what became subsequently his most important tool—bounce lighting. Mitra placed a framed painter white cloth over the set resembling a patch of sky and arranged studio lights below to bounce off the fake sky.