The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM is a compact multipurpose zoom lens that offers Optical Stabilization (OS) and covers wide angle to telephoto to macro photography. Features include: maximum magnification ratio of 1:2.9; Thermally Stable Composite (TSC) material construction; double-sided aspherical lenses; 13x high zoom ratio; one Special Low Dispersion (SLD) glass and three aspherical glass lenses; Super Multi-Layer Coating; Hyper Sonic Motor (HSM) to ensure fast and quiet auto-focusing; rounded seven-blade diaphragm; and a brass bayonet mount.
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