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The Sony FE 400mm f/4.5 G Master OSS is a full-frame E-mount super-telephoto prime built for handheld sports and wildlife work. It is unusually light and compact for a 400mm prime, with fast linear-motor autofocus, built-in optical stabilization and weather sealing. It sits below Sony's 400mm f/2.8 GM: it gives up a stop of light and some background blur in exchange for far less weight and bulk. Owners praise the sharpness wide open and the balance on a body; the main trade-off is the f/4.5 aperture, which limits low-light work and requires a teleconverter for more reach.
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Lowest price we've seen: $2,698.00 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Reviewers and owners treat the 400mm f/4.5 GM as one of the best handheld super-telephotos for E-mount. They praise its sharpness wide open, fast autofocus and light weight, and accept the f/4.5 aperture as the price of that portability.
The Sony FE 400mm f/4.5 GM OSS is a 400mm telephoto prime lens in Sony's G Master line. It is 9.5 inches long and weighs 2.2 pounds. That makes it 4.2 pounds lighter and 4.6 inches shorter than the FE 400mm f/2.8. A single front element design puts the center of gravity closer to the camera body for balance during handheld shooting.
Two XD (extreme dynamic) linear motors drive the autofocus, which works quietly and supports continuous shooting at up to 120 fps for both stills and video. Focusing is internal, and manual focus is always available. A focus range limiter and four focus hold buttons give more control over autofocus. Optical SteadyShot offers three modes: standard (Mode 1), panning (Mode 2) and moving subjects (Mode 3).
Super ED and ED glass elements reduce chromatic aberration, and Nano AR Coating II reduces flare. The 11-blade rounded aperture produces smooth bokeh. The lens has rubber gaskets along every seam and a rubber ring around the mount for dust and moisture resistance. A fluorine coating on the front element repels water, oil and dirt. The detachable tripod foot can be removed to make the lens more compact. The body combines metal and polymer materials.
