Request InfoSigma Corp. of AmericaRONKONKOMA, N.Y., March 24, 2016 — Sigma Corp. of America has announced the high-performance, compact Sigma sd Quattro and Sigma sd Quattro H mirrorless camera systems with Foveon Quattro sensors. The Sigma sd Quattro features an advanced photo system type-C-sized sensor, with the Sigma sd Quattro H featuring a larger APS-H sized sensor for even higher image quality. A magnesium alloy body make the devices durable and rugged, while a dust- and splash-proof design makes them ideal for photographers facing harsh conditions. 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