Sigma 300-600mm F4 DG OS | Sports: B&H Photo / Amazon / Adorama Sigma has updated the release date of the Sigma 300-600mm F4 DG OS | Sports to May 15th, 2025. The lens was announced in February with an unknown release date in May. Related posts: Sigma 300-600mm F4 DG OS | Sports Announced Sigma 28-105mm f/2.8 … Continue reading Sigma 300-600mm F4 DG OS | Sports for Sony E-mount Coming May 15th, 2025