1. A method that comprises a pair of spatial light modulators displaying time-multiplexed mask pairs, wherein: (a) the pair of modulators comprises a rear modulator and a front modulator; (b) each mask pair comprises a rear mask and a front mask, such that the rear mask is displayed by the rear modulator while the front mask is displayed by the front modulator; (c) the pair of modulators generate an auotomultiscopic display; (d) light from a backlight passes first through the rear modulator and then through the front modulator; (e) the automultiscopic display has a refresh rate of at least 13 Hz; and (f) during each refresh of the automultiscopic display, the pair of modulators display a set of time-multiplexed mask pairs that produce a pattern of light that would, if integrated by a viewer's eye, comprise an approximation of a target light field, which approximation has a matrix rank higher than one.