The Sigma 18-50mm f/2.8 DC DN Contemporary is a fast, standard zoom for crop sensor mirrorless cameras that’s ideal for day-to-day shooting. Sigma’s first mirrorless zoom offers a full-frame equivalent focal range of 27-75mm and features a constant f/2.8 aperture that is ideal for creating bokeh-filled backgrounds as well as low-light shooting.
Despite its small size, the Sigma uses a design with 13 elements arranged in 10 groups, with one SLD super-low dispersion element and three aspherical elements.
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