Sony’s insight into sensor technology is said to have heavily influenced the optical design, with an emphasis on resolution and manufacturing precision, particularly during preparation and positioning of lens elements.In terms of optical construction, the 24-70mm F2.8 uses 18 elements in 13 groups, complete with a mix of aspherical, Super ED, and ED glass types, and Nano AR coating. The lens features what’s called a Direct Drive SSM (supersonic wave motor) for fast and near-silent AF operation. Minimum focus is 14.96” (0.38m), with a maximum magnification of 0.24x. Externally, the lens has a focus hold button, but
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