Sigma 17-50mm F2.8 EX DC OS HSM Lens For Pentax 58C961 (Stock of UK)

The lens has a fast f/2.8 maximum aperture throughout the entire zoom range. It produces high contrast and sharp images throughout the zoom range even at its maximum aperture. This lens is also equipped with Sigma's Hyper-Sonic Motor (HSM) which provides for fast and quiet autofocusing.

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