Sigma 30mm f/1.4 DC HSM Art Lens – Nikon F (DX Format). Hyper Sonic Motor (HSM) Autofocus System. Focus System: Hyper Sonic Motor (HSM) with rear focusing. With itsoutstanding optical quality, fast f/1.4 aperture, and high-end Art series design, theSigma 30mm f/1.4 DC HSM Art Lens is amust-have for DX-format photographers seekingexceptional image quality and creative versatility.
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