Its the usual Youtube thing where there's multiple videos. The one linked is the bibliography popular science utterly non-technical spin. There's a three part technical series, a fun two hours viewing, and the end of the third technical video goes has some performance shots. It performs really well for a tiny little thing, like per gram or per cubic centimeter the performance is excellent. Its a cool technology and when I saw it I immediately wondered if it would be possible to make a microscope the same way out of single solid cylinder of glass. I don't think so; but it would be cool. It would also make an interesting, although probably very expensive, binocular technology.