Canon’s fastest, highest quality, professional grade 50mm prime lens.Roughly two-and-a-half years ago Canon replaced the legendary EF 50mm f/1.0L USM with the EF 50mm f/1.2L USM. While its predecessor was the fastest (and one of the most expensive) mass-production lens ever made, by sacrificing two thirds of a stop, Canon was able to reduce the price of the lens significantly, although the 50mm f/1.2L USM remains very expensive for a standard prime lens.
