Sigma 24-70mm F/2.8 DG OS HSM A for Nikon review: Good value standard-zoom - DXOMARK
Tamron 24-70mm f/2.8 Di VC G2 USD SP Zoom Lens for Nikon - Walmart.com
24-70mm Showdown - Nikon F vs Z vs Tamron vs Sigma Art - YouTube
Ken Rockwell on Twitter: "Awesome new Tamron 24-70mm f/2.8 IS/VR Review: works as well as Canon or Nikon for half the price!!!!!!! https://t.co/PPSexoG4Nc https://t.co/EV7172reXp" / Twitter