Leica's flagship 50mm — the modern ASPH Summilux, considered one of the finest standard lenses ever made.
The Leica Summilux-M 50mm f/1.4 ASPH. is the current-generation flagship standard lens for the Leica M system, introduced in 2004. It represents the pinnacle of Leica's optical engineering at the 50mm focal length, delivering exceptional sharpness and rendering that has made it the benchmark against which all fast fifties are judged by enthusiasts and professionals alike.
Optical performance is extraordinary. Sharpness is outstanding from f/1.4 — remarkably so for a lens of this speed. The aspherical element virtually eliminates spherical aberration and coma, producing images with exceptional clarity even wide open. Bokeh is smooth and refined. Colour rendition and contrast are superb, with the micro-contrast that defines the Leica look.
Leica M mount with rangefinder coupling. Available in both silver and black chrome finishes. Filter thread is 46mm. Weight is approximately 335 grams — compact given the optical performance. Build quality is outstanding with brass and aluminium construction, precision-machined in Germany. The focus ring is silky smooth with perfectly calibrated rangefinder coupling.
Extremely expensive both new and used, with strong resale values. Prices have actually appreciated over time as demand consistently exceeds supply. Check rangefinder coupling accuracy and smooth focus action. Beware of counterfeits. The definitive 50mm lens for Leica M shooters — alternatives include the more affordable Summicron 50mm f/2 ASPH or Voigtlander options.