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The Sigma 1770mm F284 DC Macro OS HSM C is a versatile standard zoom lens for APSC DSLR cameras, offering a focal range of mm, fast maximum aperture of f/28 at the wideangle setting, and macro capabilities too Retailing for £499 / $499, read our indepth Sigma 1770mm F284 DC Macro OS HSM C review to find out if it's a worthwhile upgrade to your standard kit lensThe Sigma 1770mm f/284 DC Macro (OS) HSM is a refreshingly unique lens in a market of "walk around" lenses While some standard zoom lenses (not all) have apparently decided to opt for a 2470mm focal range, Sigma has decided to dip a toe into the wideangle end of the focal length poolSigma 1770mm F284 DC Macro OS HSM C Lenses with builtin focus motor focus faster and more quietly than lenses without a focus motor which rely on the camera's body focus motor 5 Sigma 17 70mm F 2 8 4 Dc Macro Os Hsm Review Lensvid Sigma 17-70mm f/2 8-4 5 dc macro