SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary Lens – Canon – Firmware Update Ver. 2.00 (2018.10.30): Improvements 2019-01-12
2015 Sigma Superfan Contest: Monthly Prizes for Certain Sigma Product Owners in the USA and D.C.: Share Your Photos and #SigmaSuperfan Story Before 5pm ET on Nov.16, 2015 2015-07-06
