Leica Summaron-M 35mm f/3.5 - Leica M Mount

The Summaron-M 35mm f/3.5 is a compact wide-angle lens for the Leica M-mount system, based on the earlier screw-mount optical design. It is valued for its tiny physical dimensions and its ability to produce sharp images with a vintage rendering and gentle fall-off. The lens features a simple six-element in four-group design, providing a classic aesthetic that is popular with film photographers and digital users seeking a less clinical look. When sourcing a used Summaron-M, it is essential to check for internal haze, which frequently develops in these older Leica optics. SDS inspects the aperture blades for oil and ensures the infinity lock mechanism, if present, functions correctly. The focus throw should be smooth, and the mount should be free from significant wear to ensure accurate rangefinder coupling.