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Sigma 18-50mm f/2.8 DC DN Contemporary lens announced: APS-C mirrorless lens makes a strong first impression
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Amazon.com : 62mm Pro Series Multi-Coated High Resolution Digital Ultraviolet Filter for Sigma 18-250mm F3.5-6.3 DC Macro OS HSM, Sigma 70-300mm f/4-5.6 DG OS Lens, Sigma 18-200mm f/3.5-6.3 II DC OS HSM
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