Sigma 30mm f/1.4 DC HSM for Pentax & Sony
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Sigma has announced the release of the Sigma 30mm f/1.4 DC HSM lens in Pentax and Sony mounts. With an optical formula comprising nine elements in eight groups and an iris diaphragm with nine rounded blades (and no “EX” designation in the name), this lens features a completely different design to the older Sigma 30mm f/1.4 EX DC HSM, which was introducedback in 2005. It also has a shorter close-focusing distance of 30cm and a higher maximum reproduction ratio of 1:6.8. The filter attachment size is unchanged at 62mm, as is the 30mm focal length that translates into 45mm on Pentax and Sony cameras with APS-C size image sensors. As part of the manufacturer’s ‘Art’ line, the new 30mm f/1.4 DC HSM is compatible with Sigma’s separately sold USB dock accessory and Sigma Optimisation Pro software.