Leica have announced they are no longer producing this lens 

With its impressive angle of view of 107?, this new TRI-ELMAR conquers 16 mm super wide-angle photography in perfect Leica M style. Due to the minimal distortion and barely perceptible field curvature, it can be recommended for highly demanding architecture photography even at the 16 mm setting. Used on the digital M8, it produces the image effect of a 21 - 28 mm lens, still enabling extreme wide-angle views. The ultra compact shape is achieved by two aspherical elements. A new design of the interior focusing significantly enhances the quality in the close-focus range through an adaption of the floating element principle. Brilliant field depth can therefore be used from a distance of 0.33 m for hyperfocal photography.

This lens is supplied WITHOUT finder.

The intricate optical design and construction of the lens are responsible for its outstanding sharpness and imaging qualities. The Leica Super-Elmar-M 21 mm f/3.4 ASPH. is constructed with eight lenses in seven groups. At the same time, the use of one lens element with two aspherical surfaces and four lenses with anomalous partial dispersion ensure that aberrations are reduced to an absolute minimum.

As with all Leica lenses, the Super-Elmar-M 21 mm f/3.4 ASPH. was designed and developed by Leica specialists in Solms, Germany, and represents the perfect combination of optical and technical expertise. Particularly reliable and with enduring value, every Leica lens is manufactured from only the highest quality materials and is assembled with meticulous precision, completely by hand. The combination of cutting-edge technologies and extremely thorough manufacturing processes guarantees consistently excellent quality.

Condition: Mail Order Returns (MOR) - An item that has been purchased online and returned / Serial number: 4830605

The LEICA SUMMILUX-M 21 mm and 24 mm f/1.4 ASPH. are remarkable high-performance lenses. They combine the advantages of ultra-high speed, such as selective focus and excellent available light capability with outstanding imaging and extremely wide angles of view. This extraordinary potential makes the new Summilux?M lenses simply indispensable for the professional M photographer. Their special reliability and value retention is the result of using high-quality materials and intricate assembly by hand at the Solms factory. The combination of state-of-the-art technology with meticulous craftsmanship based on skill and experience guarantees the constant quality of every single Leica lens, once again widening the creative potential of Leica M photography.