1. A computer-implemented method for computing an effective inter-ocular distance for a modeled viewer based on a maximum ocular divergence angle, the method comprising: obtaining the maximum ocular divergence angle for the modeled viewer, wherein the maximum ocular divergence angle is based on a maximum angle between a left or right optical path of the modeled viewer diverging outward from center and a plane perpendicular to a modeled viewing screen; obtaining a viewing distance from the modeled viewer to the modeled viewing screen; obtaining an inter-ocular distance between a left perspective position and a right perspective position for the modeled viewer; computing the effective inter-ocular distance based on the viewing distance, the inter-ocular distance, and the maximum ocular divergence angle, the effective inter-ocular distance representing a maximum parallax condition; composing a computer-generated scene having a computer-generated object in view of a pair of stereoscopic cameras based on the effective inter-ocular distance; and creating a stereoscopic image of the computer-generated object within the computer generated scene.