A head-tracking multiview display comprising: a multibeam backlight configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of a multiview image, wherein the multibeam backlight comprises: a light guide configured to guide light in a propagation direction along a length of the light guide; and a plurality of multibeam elements spaced apart from one another along the light guide length, a multibeam element of the plurality of multibeam elements being configured to couple out from the light guide a portion of the guided light as the plurality of light beams having the different principal angular directions; and wherein the head-tracking multiview display further comprises: a light valve array configured to modulate light beams of the light beam plurality to provide a plurality of views of a scene as the multiview image, the view plurality comprising a set of primary views and a secondary view representing a perspective view of the scene that is angularly adjacent to the primary view set, wherein the head-tracking multiview display is configured to selectively provide either the primary view set or an augmented set of views comprising the secondary view and a subset of the views of the primary view set according to a tracked position of a user and wherein a size of the multibeam element is comparable to a size of a light valve of the light valve array in that the size of the multibeam element is between fifty percent and two hundred percent of the light valve size. a multibeam backlight configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of a multiview image, wherein the multibeam backlight comprises: a light guide configured to guide light in a propagation direction along a length of the light guide; and a plurality of multibeam elements spaced apart from one another along the light guide length, a multibeam element of the plurality of multibeam elements being configured to couple out from the light guide a portion of the guided light as the plurality of light beams having the different principal angular directions; and wherein the head-tracking multiview display further comprises: a light guide configured to guide light in a propagation direction along a length of the light guide; and a plurality of multibeam elements spaced apart from one another along the light guide length, a multibeam element of the plurality of multibeam elements being configured to couple out from the light guide a portion of the guided light as the plurality of light beams having the different principal angular directions; and wherein the head-tracking multiview display further comprises: a light valve array configured to modulate light beams of the light beam plurality to provide a plurality of views of a scene as the multiview image, the view plurality comprising a set of primary views and a secondary view representing a perspective view of the scene that is angularly adjacent to the primary view set, wherein the head-tracking multiview display is configured to selectively provide either the primary view set or an augmented set of views comprising the secondary view and a subset of the views of the primary view set according to a tracked position of a user and wherein a size of the multibeam element is comparable to a size of a light valve of the light valve array in that the size of the multibeam element is between fifty percent and two hundred percent of the light valve size. <EOS>