Sharp super-telephoto zoom, tenacious AfThe first super-telephoto zoom in Sonyf 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.g Master super-telephoto zoomA 100 mm to 400 mm zoom range is ideal for sports, wildlife and similar subjects, with image quality and Af performance that support professional working needs.Fast, tenacious autofocusAn optimal combination of double linear motor and Ddssm (Direct Drive Ssm) drive systems achieves quick response, high accuracy and tenacious tracking.High resolution and fast Af at any focal lengthPrecision G Master optics ensure consistently high corner-to-corner resolution at any focusing distance throughout the lensf zoom range.Compact, lightweight and mobileInnovative modular exterior construction and magnesium components reduce weight and size for improved portability and mobility.Outstanding shooting versatilityA floating focus mechanism achieves a minimum focus distance of just 0.98 metres (3.22 ft.) so you can track and shoot subjects at any distance with one lens.FeaturesG Master super-telephoto zoomThis top-performance G Master zoom lens covers a broad 100 mm to 400 mm 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. It also implements precision sensors that provide real-time feedback for extremely high positioning accuracy, allowing the bodyf s AF system to perform at its best.High resolution at any focal lengthA precision optical design ensures consistently high corner-to-corner resolution at any focusing distance throughout the lensf s zoom range. The SEL100400GM not only delivers stunning images of distant subjects at super-telephoto focal lengths, it offers equally high performance when shooting nearby subjects as well.Compact, lightweight and mobileMagnesium alloy components and other refinements contribute to high durability as well as class-leading size and weight reductions that not only mean greater mobility, but improved manageability with lightweight bodies for easier, more stable handheld shooting.Clarity and contrast in any lightSonyf s Nano Ar Coating suppresses spurious reflections that can cause flare and ghosting in backlit and other challenging lighting situations, for consistently high contrast and clarity. Reduced flare, particularly when shooting in bright outdoor conditions, means greater framing and composing flexibility.Natural rendering and colourTwo Ed (Extra-low Dispersion) glass elements and one Super Ed glass element strategically deployed in an advanced optical design effectively suppress axial chromatic aberration that is often a cause of resolution falloff in telephoto lenses. The result is exceptionally clear, well-defined images.Zoom torque adjustmentThis is the first lens to include a zoom smoothness adjuster that provides mechanical control of zoom ring torque.