Introduction Introduced in 2011, Sony’s E 55-210mm f4.5-6.3 OSS falls into the firm’s entry-level line-up, and was the first telephoto zoom launched for the NEX, now Alpha, APS-C mirrorless models. As the equivalent to an 85-320mm, this sensitively priced model is an obvious counterpart to the firm’s 18-55mm starter lens. Despite being aimed at beginners, it features two extra low dispersion glass elements and one aspherical lens in its construction. The latter is used in the focusing group to improve AF accuracy from the camera’s contrast detection AF system.Sony’s OSS four-stop stabilization system is included to
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