Sigma Adds Three New Lenses: 17mm f/4, 50mm f/2, and 23mm f/1.4 | PetaPixel
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 16mm f/1.4 DC DN Contemporary Lens for Leica L Mount