Amazon.com : Sigma 56mm for E-Mount (Sony) Fixed Prime Camera Lens, Black (351965) : Electronics
Amazon.com : Sigma Contemporary Lens Bundle Includes Sigma 16mm f/1.4DC DN - 30mm f/1.4 DC DN - Sigma 56mm f/1.4 DC DN for Sony E-Mount Cameras, Black : Electronics
Sigma C 56 mm f/1.4 DC DN review - Introduction - LensTip.com
Review: Sigma 56mm f/1.4 DC DN Contemporary
Sigma unveils 56mm F1.4 DC DN lens for Sony E and Micro Four Thirds: Digital Photography Review
First test of the new Sigma 56mm f/1.4 E-mount lens – sonyalpharumors