The Leica M 135mm f3.4 is one of the longest lenses in Leica’s beloved M mount system. As such, it brings more background separation and the ability to get in close without physically being close. The lens, formally known as the Leica APO Telyt M 135mm f3.4, brings several key features that I’ve come to expect from the system, starting with the solid build and continuing to the color and contrast. Of course, it has a price that I’ve come to expect from the system as well — $4,495.