Introduction Although overshadowed by its more pricey, and glamorous sibling, the Zeiss 24-70mm f4 OSS, this also stabilized 28-70mm f3.5-5.6 OSS model looks like an attractive option. It’s not quite so wide of course and it’s 1 stop slower at the longer end but it’s 1/3 stop faster at the wide end and it its just $499, instead of $1,199 for the Zeiss. It has a total of 9 elements in 8 groups with one low-dispersion element and three with aspherical surfaces to reduce chromatic aberration and distortion. Also, it has dust and moisture sealing and
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