Fujinon XC50-230mmF4.5-6.7 OIS II Black 13 all-glass elements in 10 groups, including 1 aspherical lens element and 1 ED lens element 35mm format equivalent = 76mm - 350mm 3.5 Stop Optical Image Stabilization Filter Size - 58mm Compatible with all X-Series Mirrorless Cameras Lightweight focusing lens