The Sony FE 100-400mm F4.5 GM OSS is a powerful telephoto zoom lens designed to cater to the needs of professional photographers and serious hobbyists. With a focal range ideal for capturing field sports and a bright aperture that can handle challenging lighting conditions, this lens is a versatile tool for any photographer. However, its size and weight may be a drawback for some, as it is significantly larger and heavier than other 100-400mm zooms for the system. Despite this, its teleconverter support and compatibility with Sony's rear teleconverters make it an appealing option for those who need the flexibility to use the same lens for wildlife shots. The lens features a white barrel exterior, full dust and splash protection, and a dual filter system, making it a durable and versatile choice for any photographer. In terms of controls, the FE 100-400mm F4.5 GM OSS offers a range of on-lens controls, including three discrete control rings and four Focus Hold buttons, making it easy to adjust settings on the go. The autofocus system is fast, reliable, and accurate, with good macro performance, and the image quality is nearly perfect, with a little character in the bokeh. However, the lens may not be the best choice for those who want a telephoto lens that renders background elements into nothing, as it shows a little bit of pincushion distortion at longer focal lengths and has a slightly distracting texture in the bokeh. Overall, the Sony FE 100-400mm F4.5 GM OSS is a solid choice for photographers who need a versatile and durable telephoto zoom lens, but it may not be the best option for those who want a lens with a more shallow depth of field or a more compact design.
