Sigma's professional 300mm for Nikon — the EX APO 300mm f/2.8 super-telephoto.
The Sigma 300mm f/2.8 EX DG HSM APO is a professional super-telephoto prime from Sigma's EX line for Nikon F full-frame bodies, offering constant f/2.8 at 300mm with APO apochromatic glass and HSM autofocus. It competes directly with Nikon's own AF-S Nikkor 300mm f/2.8.
The lens delivers 300mm at f/2.8 with APO glass for chromatic aberration control, HSM fast autofocus, EX professional build quality, and DG full-frame coverage. A tripod collar is provided.
The 300mm f/2.8 is a cornerstone of professional sports and wildlife photography — fast enough for indoor sports and low-light action, and compatible with teleconverters for extended reach. The APO glass and HSM place this Sigma in direct competition with Nikon's own equivalent.
Test HSM tracking speed and accuracy at maximum aperture. Check APO glass condition. Verify tripod collar rotation. Inspect the large front element for impact marks or coating wear.