Released in November 2021The world's lightest large aperture F2.8 telephoto zoom G Master that brings out the full performance of the evolving body Mount: Sony FE mount full size Mirrorless compatible / Focal length: 70-200mm / Open aperture: F2.8 / Filter diameter: 77mm / [SEL70200GM2]report - Product information Released in November 2021 Evolving body performance The world's lightest large aperture F2.8 telephoto zoom G Master that brings out everything. Focal length: 70-200mm. Open aperture: F2.8. Filter diameter: 77mm/[SEL70200GM2] report - SEL70200GM2 Released in November 2021The latest optical design achieves high resolution performance from the maximum aperture of F2.8 to the periphery of the screen throughout the entire zoom range. - The surface is manufactured and controlled with high precision of 0.01 microns. The latest optical design employs the ultra-high aspherical XA (extreme aspherical) lens and the ED (extra low dispersion) aspherical lens which provides detailed images from the maximum aperture of F2.8 to the edges of the screen over the entire zoom range from 70mm to 200mm. It achieves high resolution performance that depicts images. Achieved a weight reduction of approximately 29% compared to the previous model By inheriting the technology used in the FE 400mm F2.8 GM OSS and FE 600mm F4 GM OSS the 70-200mm F2 has high optical performance and AF performance. The world's lightest* .8 zoom. The degree of freedom in shooting has been further increased. Adopts a new optical design with fewer lenses. In addition a high-thrust XD linear motor which is significantly lighter than conventional actuators and lightweight and highly durable magnesium alloy parts are used inside the lens barrel resulting in a mass of 1045g approximately 435g lighter than previous models. Achieved a weight reduction of approximately 29%. *For full-frame 70-200mm F2.8 telephoto zoom that supports autofocus. As of October 2021. Research by Sony - The latest optical design technology minimizes chromatic aberration creating beautiful and natural images Two ED (specially low dispersion) glasses and two super ED glasses minimize chromatic aberration Yo..