1. A display system that presents three-dimensional content to a viewer, the viewer having a viewing reference, the display system comprising: a screen assembly having one or more adaptable display characteristics relating to the presentation of the three-dimensional content; first circuitry that at least assists in producing reference information corresponding to at least one aspect of the viewing reference of the viewer; and second circuitry causing modification of at least one of the one or more adaptable display characteristics, the modification corresponding at least in part to the reference information.