Realizing a truly expansive field of view, the Distagon T* 15mm f/2.8 ZM Lens from ZEISS is a fast, wide prime designed for M-mount rangefinder cameras. This super wide-angle utilizes a Distagon optical design to limit distortion, and also employs one aspherical element and two anomalous partial dispersion glass elements to control spherical and chromatic aberrations for a high degree of sharpness and clarity. A floating elements system is also used to maintain consistent image quality throughout the focus range, down to the minimum focusing distance of 11.8". Individual elements have also been treated with a T* anti-reflective coating to suppress lens flare and ghosting, and a built-in lens hood also helps to limit surface reflections when working in strong lighting conditions.