1. In a computer-implemented method of rendering a sequence of images of a 3-D model space, wherein the model space comprises a plurality of graphics primitives, the method of rendering each of said graphics primitives at a spatial resolution that reflects an ability of a human visual system to spatially resolve said graphics primitive, the method comprising the steps, for each of said graphics primitives, of: a) determining an initial exposure time at which a graphics primitive becomes exposed in an image sequence; b) storing the initial exposure time for said graphics primitive; c) determining, for said graphics primitive, an exposure duration corresponding to a current frame of the image sequence by subtracting (1) a current time corresponding to said current frame from (2) said initial exposure time; d) rendering, for said current frame, said graphics primitive at a spatial resolution that is proportional to the exposure duration of said graphics primitive if said exposure duration is substantially less than a known time required for the human visual system to maximally resolve a newly exposed target.