The first super-telephoto zoom in Sony's flagship G Master series covers a versatile 100 to 400 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.g Master super-telephoto zoomThis top-performance G Master zoom lens covers a broad 100 to 400 focal length range that is ideal for sports, wildlife, and other subjects that require a long reach. It offers image quality and Af performance that will support professional fieldwork, tracking and capturing even fast-moving subjects with outstanding resolution and clarity.Fast, tenacious autofocusThe optimal combination of double linear motor and Ddssm (Direct Drive Ssm) drive systems is the first of its kind.