The Leica Super-Elmar-S 24mm f/3.5 ASPH. (19mm in 35 mm format) opens up an enormous range of creative opportunities in image composition particularly in interior, architectural, and landscape photography. At the same time, the lens is optimized for maximum contrast rendition and resolution from its widest aperture and guarantees a constantly high level of quality from its closest focusing distance to infinity. The optical system comprises twelve lenses in ten groups. The optical design comprises 12 elements in ten groups. Five elements are made from glasses with anomalous partial dispersion. Three low-dispersion fluoride elements correct chromatic aberrations. Two further aspherical elements, and the aspherical surface of the front element, minimise monochromatic aberrations. The lens is focused by moving the middle optical group. An independently moved floating element guarantees superior performance at close focusing distances.