This ultra-telephoto single-focus premium lens is the XF lens' flagship model. The advanced optical design minimized various aberrations and realized high definition to the max. The low f-ratio and all spherical lenses achieve outstanding resolution with the unique creamy bokeh. The 5-stop image stabilization supports handheld shooting. Along with the quality basic functions, the coated body in the quality matte silver color blocks the heat in the burning sun. It is dust-, drip-, and low-temperature (-10 ℃) proof with fluorine-coating of lens elements to repel water/dirt. This ensures stable quality images for scenes in nature or outdoor sports.