Charles, the problem with your analogy is that the current-day examples are composed of multiple exposures, taken over the course of days and laboriously assembled, while the example from Blade Runner appears to be an image captured in a single instant.
A better example from the current-day would be the "Light Field Camera". An image is captured in a single instant, but captured in three dimensions, not just two. After taking the photo you can change the depth of field, or even change the perspective of the photo, all "after the fact".
You can see examples here: http://www.lytro.com/camera/