The Sony FE 100-400mm f/4.5-5.6 GM OSS is a full frame 100-400mm E-mount zoom lens. The lens is the first super-telephoto zoom in Sony’s flagship G Master series covers a versatile 100 mm to 400 mm range. With extraordinary resolution and fast, precise autofocus it lets you capture distant action with outstanding quality and immediacy. In addition to world-class image quality, this fine lens offers the mobility, reliability, and operability that professional applications demand.