This 100mm mid-range telephoto prime lens is a superb creative tool that offers outstanding G Master resolution plus innovative STF (Smooth Trans Focus) optics for magnificent bokeh. It features fast, precise, quiet DDSSM autofocus, and close-up capability up to 0.25x magnification. Built-in Optical SteadyShot image stabilisation minimizes blur that can occur during low light or macro shooting.1 Advanced optics and design achieve extreme resolution and absolutely breathtaking bokeh that combine for overall performance that epitomizes the G Master concept. This lens has been specifically designed to produce extraordinarily smooth, natural bokeh without vignetting. The result is naturally immersive depth and dimensionality. Extreme image-wide resolution and sharpness fulfill the demanding 50 lines per millimeter MTF requirement that is the basis of G Master optical design. DDSSM (Direct Drive SSM) focus drive provides fast, precise, quiet autofocus, allowing the user to concentrate fully on capturing superlative stills or movies.