The collapsible Elmar-M 50mm f/2.8 is a remake of the original collapsible Elmar 50mm f2.8 from the 1950´s. This newer version is called Elmar-M 50mm f/2.8 and was made only a few years, until 2007. The old version from the 1950´s is simply called Elmar 50mm f/2.8. However, the Elmar-M is an enormous improvement, both mechanically and optically. There are two versions, a great chrome one, really a mechanical masterpiece, and a simpler black anodized one. There is no black paint version, alas.