It uses a glass molded aspheric lens at the 7th element to prevent field curvature, and places an ED (extra-low dispersion) glass lens at the 6th element to contain chromatic aberration. 

At the minimum working distance of 26.7cm, the lens delivers the maximum magnification of 0.5x for macro photography.

This Fujifilm 60mm f/2.4 XF Macro Lens is a mid telephoto lens equivalent to 90mm in 35mm format. The fast, bright f/2.4 maximum aperture makes shooting in low light possible, and provides pleasing bokeh (the out-of-focus portion of a photo) with its 9-blade aperture design--ideal for dramatic portraits.

To take advantage of the X-series cameras' mirrorless design, the rear element of the lens is as close as possible to the sensor, minimizing the back focus distance appreciably. The lens construction includes a metal barrel, Super EBC coating for improved optical performance, and it delivers improved center-to-edge resolution and brightness free from chromatic aberration. This macro lens has a maximum magnification of 0.5x, and the aperture ring has 1/3-stop click stops for more precise exposures.