A supertelephoto zoom lens is tremendously useful in a wide variety of genres, and in recent years, we have seen an influx of affordable, high-quality third-party options from companies like Sigma and Tamron. Tamron's latest is the 150-500mm f/5-6.7 Di III VXD, and this excellent video review takes a look at the lens and how it compares to a native Sony option, the FE 200-600mm f/5.6-6.3 G OSS.