You can spend under $100 for a 50mm lens with autofocus to well over $2,000 if you want the best of the best, with options at just about every price point in between. At $379, Viltrox's AF 50mm f/1.8 lens promises performance upgrades over the cheapest options without getting into the realm of ultra-expensive options, and this great video review takes a look at the performance and image quality you can expect from it.