A few days ago we broke the news that Tamron would release a big zoom now there is a rumor that Sigma will release a large zoom lens. It will cover a new part of the market that current Sigma lenses do not cover. Sigma 70-200mm f/2.8 DG DN OS Sports B&H Photo / Amazon / Adorama Sigma 150-600mm … Continue reading Sigma is Preparing New Zoom Lenses