It's not. I don't have any kind of graphics card, unfortunately, so I cannot render high-sample-count images in any reasonable amount of time. (That last one was nearly an hour for just 300 samples. Most of the high-quality stuff out there is 1000+ samples) As a result it comes out a little bit grainy.Those are some nice tech demos.
What I don't get is the dithering though. If that is intended as some sort of a 'grainy film' effect, why aren't the backdrops and SFX dithered as well?