Quantum Limits (Score 1)

Each frame taken has to be exposed long enough to pick up enough photons of light to get an image. If you want 8 bit resolution, you need to give it enough time to get up to 255 photons; 4095 for 12 bit, etc. Thus, in average room lighting, if you try to take more than a few hundred frames a second @ 8 bits you just get blackness on the output. For a million independent frames a second to show up, you'd probably have to be standing on the sun.