G Master super-telephoto lensFast autofocus plus stunning G Master resolution and gorgeous bokeh in a lightweight, well-balanced, mobile lens. Sony’s original XA lens and XD linear motor technologies contribute to peak optical and mechanical performance, making it possible to capture dynamic, eye-catching images from afar. Ideal for sports, news, and nature photography.XD Motors for fast, precise, tenacious AFTwo XD (extreme dynamic) linear motors provide fast, precise AF and reliable tracking. The SEL600F40GM brings out the best in modern camera bodies, effortlessly maintaining accurate focus on fast-moving sports and wildlife subjects. A control algorithm developed specifically for these motors contributes to fast positioning of the large focus group with minimum delay and vibration.Large XA element delivers superb resolution and bokehAn exacting G Master optical design uses three fluorite elements to suppress chromatic aberration, which can be problematic in telephoto lenses. A large XA (extreme aspherical) element is also included to eliminate onion-ring bokeh. Each lens is individually calibrated to achieve the ideal balance between resolution and bokeh.Reliability and durability for challenging conditionsA dust- and moisture-resistant design4 provides reliability for outdoor use in challenging conditions, and the front lens element features a fluorine coating that repels water, oil, and other contaminants. A rigid magnesium alloy is used not only for the lens barrel exterior and tripod mount area, but for critical areas of the barrel interior as well, ensuring maximum strength and durability.
