Sigma filed a lens patent for Micro Four Thirds cameras. The patent (2013-3324) in Japan from Sigma is for Sigma 25mm f/1.4 lens for Micro Four Thirds cameras. Sigma currently has 19mm f/2.8 lens and 30mm f/2.8 lens for Micro Four Thirds cameras .
Sigma Filed a Patent for 25mm f/1.4 Micro Four Thirds Lens
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