This medium telephoto lens produces outstanding macro images. The use of one aspherical and one extra-low dispersion element effectively controls various aberrations, such as field curvature and chromatic aberration, plus all the lens groups are shifted together during focusing to achieve the highest level of sharpness in the X Series line up. As well as being perfect for close-ups, it can also be used for many other medium telephoto applications, with the F2.4 maximum aperture delivering smooth bokeh.