Featuring an all-glass aspherical lens and other elements, the lens is polished to perfection and treated with Super EBC coating while the high-quality metal barrel and precision-machined 1/3-step aperture ring gives versatile control.

Excellent out-of-focus bokeh are achieved thanks to the design of the moulded aperture diaphragm blades. The blades are curved to create a circular image at all aperture settings, while the very edges of each blade are meticulously rounded off rather than simply cut off, which delivers a sharper image.

Specifically designed to maximise the mirror less design of the X-Pro1's body, the X-Mount has a short flange back distance of just 17.7mm giving high resolution right across the image.