Sigma 18-250mm superzoom for DSLRs announced

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Sigma has announced a new lens – Sigma 18-250mm F3.5-6.3 DC Macro OS HSM superzoom for DSLRs. The new lens is an entirely new design, much smaller than the previous version of the lens. The new smaller lens incorporates what Sigma calls ‘Thermally Stable Composite’ (TSC) construction. It is a material that’s used by Sigma […]