Reviews and Problems with Sigma 30mm F1.4 EX DC /HSM
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19 July 2008
Excerpt: Sigma's 30mm f/1.4 EX DC HSM is a useful prime lens for the D-SLR owner with a cropped format APS-C type sensor. Essentially it takes on the role of prime standard lens, effectively offering 45mm (1.5x), 48mm (1.6x) or 60mm (2x) - depending on which camera you use it with. The lens comes in mount fittings for Sigma, Canon, Nikon, FourThirds, Sony and Pentax D-SLRs.