The GF250mmF4 R LM OIS WR lens achieves exceptional image quality. Composed of 16 lenses in 10 groups, this lens delivers unsurpassed color reproduction, three dimensional image quality, as well as ultra-high resolution and rich bokeh. In addition, this telephoto lens is equipped with a powerful five-stop optical image stabilization and a new focus preset function, which allows the photographer to instantly activate focus settings previously saved in the lens memory. With a rugged, lightweight magnesium alloy lens barrel designed to be dust and weather-resistant, the GF250mmF4 R LM OIS WR is capable of operating in temperatures as low as 14 Degree F/-10 Degree C. The front lens element has a fluorine coating designed to repel water and dirt even under tough outdoor conditions