With lenses like the 35-150mm f/2-2.8 Di III VXD, Tamron has shown that in addition to creating pragmatic, affordable lenses, they also have their eyes on those that push the boundaries of design and offer unique capabilities. One such lens is the 50-400mm f/4.5-6.3 Di III VC VXD, which offers an unusually wide range of focal lengths, and this excellent video review takes a deep look at the lens and the sort of performance and image quality you can expect from it in practice.