Is This Ridiculously Affordable Lens Any Good?

In the past few years, we have seen a real influx of highly affordable lenses that still offer serviceable to even good results, but even by those standards, the new TTArtisan 500mm f/6.3 is really, really cheap. Can it offer good performance and image quality despite that very low price? This excellent video review takes a look at everything you can expect from it in usage.