1. A stereoscopic image display system, comprising: an eye pupil acquisition system configured to detect eye pupils of a viewer to determine a three-dimensional (3D) location of a left eye pupil relative to a first display system and a 3D location of a right eye pupil relative to a second display system based at least in part on infra-red light reflected from the eye pupils of the viewer, the eye pupil acquisition system further configured to track a positional change of the eye pupils; the first display system configured to display an image for viewing with a left eye of the viewer; the second display system configured to display the image for viewing with a right eye of the viewer; image generation logic configured to generate a sequential image corresponding to the positional change of the eye pupils, the sequential image including a motion parallax depiction of the image for stereoscopic viewing; and a control system in communication with the eye pupil acquisition system and operably coupled to the first and second display systems and being configured to, responsive to the determined 3D locations of the eye pupils, reposition components of the first and second display systems to: track the positional change of the eye pupils; and for stereoscopic viewing of the sequential image, in response to the positional change: focus a first projection of the image to within a first focus at the 3D location of the left eye pupil of the left eye of the viewer; and focus a second projection of the image to within a second focus at the 3D location of the right eye pupil of the right eye of the viewer.