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. Two extra-low dispersion glass elements and one Super ED element help reduce chromatic aberrations and color fringing for improved clarity and color neutrality. One aspherical element and two Advanced Aspherical (AA) elements help suppress astigmatism, field curvature, coma, and other monochromatic aberrations. A Nano AR coating has been applied to reduce surface reflections, flare, and ghosting for increased contrast and color rendering in strong lighting conditions. Constant f/4 maximum aperture offers consistent performance throughout the zoom range and also lends greater control over focus position for shallow depth of field techniques. Versatile zoom range suits working with a variety of subjects, from portraiture and events applications to landscapes and sports shooting. Rounded nine-blade diaphragm contributes to a pleasing bokeh quality when employing selective focus techniques.