The Canon EF 50mm f/1.2L was one of the company's most well-known and popular lenses, but it was a rather quirky model that was not without flaws in both autofocus performance and image quality. On the other hand, the new RF 50mm f/1.2L USM quickly established that the company had set a new standard for itself when it came to lens design and image quality. Just how much better is the new model? This great video review takes a look at both old and new to answer that question.