The tough competition with Zeiss to create the highest quality lenses resulted in the development of the high-speed standard lens that would become the flagship of the respective camera system.
Consequently, the Summicron 50 mm f/2 (II) contributed considerably to the reputation of the Leica brand. Compared to the original version, the second generation of the standard lens was not only more modern in design, but also came with technical innovations.
In addition to the close-focus distance, the strength of contrast and the depth of detail were also improved. The Summicron 50 mm f/2 (II) was manufactured between 1956 and 1968. There was a screw-on version as well as an M Bayonet one.
Leica produced close to 120,000 of the lenses.