Sigma: New Large Aperture 50mm F1.4 DG HSM Lens is an Addition to Sigma’s New Art Line of Lenses 2014-04-11
Gentec International Announces New Sigma 24-105mm F4 DG OS HSM Zoom Lens for Sigma’s Art Line of Lenses 2013-10-25
Sigma Mount Conversion Service: So You Can Change Camera Systems Without Replacing Your Sigma Lenses 2013-08-20
Gentec News: Sigma’s 18-35mm F1.8 DC HSM World’s First Zoom Lens Offering Constant F1.8 Aperture 2013-06-17
