Introduction The Sony FE 70-200mm f4 G OSS is the last model to be released of the initial four lenses announced specifically for the full-frame mirrorless 36-Mpix A7R and 24-Mpix A7 models. This is the first model in the system’s line up not made in-conjunction with Zeiss. However, as a G-series model it promises both high-grade construction and superior optical quality.Like the other models in the line-up it’s intended for enthusiasts and has a complex optical construction consisting of a total of 21 elements in 15 groups and adopts both Super ED and ED glass as