Nikon Nikkor-S 5cm f/1.4 (LTM) - Leica L39 Mount

The Nikkor-S 5cm f/1.4 is a vintage rangefinder lens produced in the Leica Thread Mount (L39). Renowned for its heavy brass construction and characteristic rendering, it was a benchmark for speed in the 1950s. The lens utilizes a Sonnar-style optical design, offering a classic look with distinctive bokeh and sharp central resolution when stopped down slightly. Used examples should be carefully inspected for haze and cleaning marks on the soft internal glass elements. SDS checks the mechanical operation of the focus helical, which can become stiff as the original grease ages, and the aperture blades for oil contamination. As these are often used with adapters, the rear element clearance and rangefinder coupling accuracy are also verified.