Offering super-telephoto reach in an ultra-light package, the Sony FE 400mm f/4.5 GM OSS Lens (Sony E) brings G Master optical precision to one of the most portable 400 mm prime lenses ever made. With high-speed autofocus support, advanced internal stabilisation, and a weather-resistant design, this lens is optimised for handheld use everywhere from football sidelines to photographing wildlife deep in the woods.