One of the greatest advancements gear-wise of the last few years has been the proliferation of affordable but high-quality supertelephoto zoom lenses, bringing ultra-long focal lengths and genres like wildlife to many more photographers than before. Nonetheless, at the very top end, supertelephoto prime lenses still sit as the professional equipment of choice, and they command quite high prices — five digits, in fact. So, what does that money get you? This great video review takes a look.