bernabernar

The useful distinction in this thread is the one that explains the stall. A hologram stores the optical field, amplitude and phase, so depth and focus fall out of the reconstructed wavefront. A stereo pair never stored that field. It only fakes a couple of viewpoints. Recording the field wants coherent light and stability to a fraction of a wavelength. Showing it at video rate, across a wide angle, in ordinary room light, wants a modulator we still do not have cheaply. Film could do the slow version. Displays could not do the live one.