Sigma has announced the 24-70mm F2.8 DG DN II, a second-generation, mirrorless-only fast standard zoom lens as part of its Art series of premium optics.Recent Videos The new lens is a fraction smaller and around 10% lighter than the existing lens. And while a 19 element, 15 group design with 6 fluorite-like FLD elements and 2 SLD elements might sound familiar, the use of five aspheric elements, rather than three, shows it to be a new optical formula. The
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