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.

Apochromatic colour correction and an aspherical lens surface are combined for the first time in this lens of this type. Of its five individual elements, two are made of high-refraction glass, while two others feature anomalous partial dispersion. Its brilliance and quality of resolution are exemplary even at full aperture. Light falloff is very low. Its fast aperture, for a 90mm lens, lets you shoot at relatively short exposure times even in dim light, helping to minimise the effects of camera shake, for instance when photographing street scenes from a distance.