The Sigma 120-300mm F2.8 EX DG OS HSM is a versatile telephoto zoom lens designed for Nikon F (DX) mount. This lens stands out for its impressive combination of focal length and large maximum aperture, making it an appealing choice for wildlife, sports, and portrait photography. The construction quality feels robust, and with Sigma's Optical Stabilization (OS), you're set for shooting in less than ideal lighting conditions without too much concern for camera shake.
When discussing optical performance, the Sigma 120-300mm delivers sharp images, especially when stopped down a bit. It produces striking images with good contrast and color rendition that is pleasing to the eye. This lens features a Hyper Sonic Motor (HSM) for fast and silent autofocus, which is particularly important when trying to capture fast-moving subjects. Additionally, the lens has a weather-sealed construction, providing an extra level of durability when facing adverse conditions.
However, like any lens, it’s not without its shortcomings. The lens can be quite heavy, making it less portable and more of a challenge to shoot handheld for extended periods. You may find the need for a sturdy tripod or monopod to support its weight, especially during prolonged use. Additionally, the autofocus can be a little sluggish in low light, making it less ideal for certain fast-action scenarios after sunset or in dimly lit environments.
Overall, the Sigma 120-300mm F2.8 EX DG OS HSM for Nikon F (DX) mount is an outstanding choice for photographers looking for a powerful telephoto lens that balances flexibility and performance. While its weight may be a downside for some, the optical quality and features more than compensate for it. If you're serious about capturing stunning images of fast-moving subjects, and have the means to support the lens, it's undoubtedly worth considering.