Amazon.com : Sigma 35mm F1.4 Art DG HSM Lens for Nikon DSLR Cameras + Sigma USB Dock with Altura Photo Essential Accessory and Travel Bundle : Electronics
Sigma 35mm F1.4 DG HSM review: Digital Photography Review
Review: The Sigma 35mm f/1.4 DG HSM is Solid, But Hope For a Purebred | PetaPixel
Sigma 35mm F1.4 DG DN Art field review: Digital Photography Review
About Photography: Nikon 35mm f/1.4G vs Sigma 35mm f/1.4 lenses -- a hands-on comparison review
Sigma 35mm f/1.4 DG HSM Art Lens Review | ePHOTOzine