Sigma's professional 300mm f/2.8 for Canon — the EX APO for sports and wildlife.
The Sigma 300mm f/2.8 EX APO DG HSM is a professional super-telephoto prime for Canon EF mount. At f/2.8, it provides the speed needed for indoor sports and low-light wildlife. The APO designation ensures excellent chromatic correction. HSM motor provides fast, quiet AF. A professional-grade lens at a fraction of Canon's own 300mm f/2.8L price.
Optical performance is very good. Sharpness is excellent from f/2.8 with the APO elements controlling chromatic aberration well. The fast f/2.8 provides bright viewfinder, fast shutter speeds, and subject isolation. HSM motor is fast and accurate for tracking. Compatible with Sigma teleconverters for extended reach. Tripod collar included.
Canon EF mount. Filter thread uses a rear drop-in holder. Weight is approximately 2,400 grams — heavy but expected for 300mm f/2.8. Build quality is professional EX grade. No image stabilisation — the main limitation vs Canon and Nikon 300mm f/2.8 IS/VR alternatives. Tripod or monopod required for extended use.
Available at significantly lower prices than Canon 300mm f/2.8L. Check AF accuracy and clean elements. A capable 300mm f/2.8 for sports and wildlife shooters who want fast telephoto without Canon L pricing. The lack of IS is the main practical disadvantage. Best for tripod/monopod-based work in good light.