The Super-APO-Summicron-SL 21mm f/2 ASPH. combines a wide-angle focal length with an extraordinarily close minimum focusing distance of 0.21m. Its angle of view makes the Super-APO-Summicron-SL 21mm f/2 ASPH. especially suitable for landscape, interior and architectural photography. Its maximum aperture of f/2 is very wide for this focal length, yet it can be used with no loss of image quality. This offers additional creative possibilities thanks to a precisely controlled application of sharpness and blur. Natural skin tones, soft transitions into bokeh, exceptional microcontrast, and edge-to-edge sharpness in a distortion-free image: these top qualities are very much the norm for Leica lenses.