This Sigma 100-400mm offers a good compromise between budget 70-300mm lenses and whopping super-telephoto zooms. It’s well-built, handles nicely and boasts some useful up-market features.
Small and light for a ‘super-tele’ zoom, Good handling and performance, Reasonably priced
Only the mounting ring is weather-sealed, Fairly narrow f/5-6.3 aperture rating, No tripod mount ring available