SUMMARY
The Sony FE 400mm f/4.5 GM OSS is a super-telephoto prime lens that significantly reduces size, weight, and cost compared to its f/2.8 counterparts. It weighs under a kilogram, making it suitable for handheld shooting, and features a compact design with a 95mm filter thread. The lens boasts dual XD linear motors for fast autofocus, a customizable function ring for video focus control, and a fluorine-coated front element. It is positioned as a high-performance, value-for-money option for sports, wildlife, and safari photography.
TAKEAWAYS
The Sony FE 400mm f/4.5 GM OSS is the world's lightest super-telephoto prime lens of its type.
It is significantly smaller, lighter (under 1kg), and more affordable than the Sony FE 400mm f/2.8 GM OSS.
Features include dual XD linear motors for fast AF, a customizable function ring, and a fluorine-coated front element.
The lens offers a more manageable and accessible option for professional-grade telephoto photography.