Implications
cuts the unwanted link between exposure
(due to the aperture) and depth of field
trades off (excess) spatial resolution for ability to
refocus and adjust the perspective
sensor pixels should be made even smaller,
subject to the diffraction limit
   36mm × 24mm  ÷  2.5μ pixels  =  266 megapixels
   20K × 13K pixels
   4000 × 2666 pixels  ×  20 × 20 rays per pixel