Sigma 500mm f/5.6 DG DN OS Sports: B&H Photo / Amazon / Adorama Lens Tips published its lengthy review of the S that you can read in full here. If you’re curious how they made such a high quality lens in such a compact package make sure to read the lengthy conclusion or you can just check out the … Continue reading LT: Sigma 500mm f/5.6 DG DN OS Sports Review – Optically Outstanding