Home Donate New Search Gallery How-To Books Links Workshops About Contact LEICA SUMMICRON 50mm Guide © 2010 KenRockwell.com. This page best with Corporate S regular and bold activated. Leica has made the superb LEICA SUMMICRON 50mm f/2 lens in several iterations since 1953. It has always been the reference against which the rest of the world judges lenses. Here is a compilation