Sony FE 100-400mm F4.5 GM OSS announced

Sony has introduced the FE 100-400mm F4.5 GM OSS, a new full-frame E-mount G Master lens aimed squarely at photographers who need reach, speed and consistency in one long zoom. On paper, this feels like a serious step up for wildlife, birding, sport and photojournalism shooters, especially those who want the flexibility of 100-400mm without the exposure shift of a variable-aperture design. The headline is the constant F4.5 maximum aperture. That matters because, whether you are at 100mm or fully extended to 400mm, the lens holds the same maximum aperture. For anyone following a footballer down the touchline, a bird across changing light, or a subject moving through a cluttered background, that consistency should make exposure and depth-of-field decisions feel more predictable. Sony says the optical design uses ED XA, XA, Super ED and ED elements to control chromatic and spherical aberration, with Nano AR Coating II to reduce ghosting...