Good to know- The large 11-blade aperture of this G Master lens lets you create flawless portraits, close-ups and captivating landscape shots with beautifully soft bokeh- With extreme aspherical lenses, ED glass, and Nano AR Coating II, you can shoot wide open and still enjoy corner to corner sharpness- There's a click switch for the aperture ring, giving you nice feedback for stills and precise control for video- The two XD linear focus motors take care of fast and precise subject tracking and smooth cinematic transitions- You can assign a custom function to the focus hold button, making it easier to nail the focus or get the exposure just right- The dust and moisture resistant design with internal focusing means no specks or raindrops will find their way into the optics