30mm F1.4 EX DC (HSM)* - Sigma Corporation of America

HSM - Hyper-Sonic Motor EX - EX Lens DC - DC for Digital D - Distance Information Function J - J type Pentax AF mount lens (1) Angle of view at Sigma SD camera format * Sony/Minolta Mount: Does not have HSM * Nikon Mount: Built in motor lens: compatible .

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