A workhorse lens for events, sports, and portraiture, the Sony FE 70-200mm f/4 G OSS is a compact telephoto zoom featuring a constant f/4 maximum aperture, sophisticated G series optics, and useful AF and OSS. The smaller size, compared to an f/2.8 version, makes the lens a more portable option that is well-suited to all-day shoots and other situations where a more nimble, stabilized lens excels.