Sigma announces the Ultra-Telephoto 300-600mm f/4 DG OS Sports
Sigma has announced the ultra-telephoto zoom 300-600mm F4 DG OS sport for the L and E mounts. Sigma 300-600mm f/4 DG OS Sports Overview Versatile Reach, Prime-Like Performance The Sigma 300-600mm f/4 DG OS Sports Lens is an ultra-telephoto zoom lens designed for sports, wildlife, and action photography. canonrumors.com »