Sony FE 100-400mm F4.5-5.6 GM OSS Review
Sony's full-frame mirrorless camera line has been bolstered by the addition of the a9 body, which shoots at an incredible 20fps rate, but the system is a little light on telephoto lens options. The FE 100-400mm F4.5-5.6 GM OSS ($2,499.99) enjoys status as the lens with the longest reach in the family, and if you have enough light you can tighten its field of coverage further using a teleconverter. It's pricier than similar lenses for SLR systems, but backs it up with excellent image quality, a rock-solid build, and speedy autofocus.
Design
The FE 100-400mm ($2,499.99 at Amazon) is part of the G Master lens series, a designation Sony gives to its top-end lenses, designed to deliver excellent results on high-res image sensors, and to render out-of-focus areas with pleasing smoothness. It also means the lens is built tough—optics are housed in a gray metal barrel so you can feel comfortable shooting in rough weather. The front element is coated with fluorine, which helps to prevent o...
The FE 100-400mm F4.5-5.6 GM OSS fills a telephoto gap in Sony's premium lens lineup, packing crisp optics, fast autofocus, and strong image stabilization into a compact, lightweight telezoom.
Solid telephoto zoom range; In-lens stabilization; Adjustable zoom tension; Focus hold and limit functions; Compact, lightweight design; Sturdy, dust- and moisture-resistant construction; Removable tripod foot; Teleconverter compatibility
Not the brightest aperture; Extends when zoomed; Dim corners when shot wide open; Pricier than similar lenses for other systems