What's really amazing is that there's so much light for such a fast f-stop.
Normally, with such a fast f-stop, the pic is grainy and dark. I say they used a fast f-stop because you don't see any blurring. A long exposure (those night sky exposures show it best) smears the light if there's movement.
So, it's not just the incredible resolution, but also the clarity in all fields as well as the light and very tight focus.
Reminds me of when I talked to a guy who works on this and we talked about how in 2000, we were so far from analog resolutions... that there were silver plates taken in the beginning of photography where they were able to zoom in and read signs clearly 5 miles away... effectively giving a near infinite zoom with enough exposure.
To see the camera/format tech coming so far is really cool.