Sony FE 85mm f/1.8 Lens An ideal portrait length prime lens, the FE 85mm f1.8 from Sony is a sleek short-telephoto lens designed for full-frame E-mount mirrorless cameras. The bright f1.8 maximum aperture benefits this lens’s use in low-light conditions and also affords extensive control over depth of field when working with selective focus techniques. The nine elements, eight groups lens construction includes one extra-low dispersion element to minimise chromatic aberrations and colour fringing for greater clarity and colour accuracy. Benefiting the optical design is a simple, intuitive physical layout that incorporates a customisable focus hold button and a physical AF-MF switch. The double linear AF motor itself affords quick, quiet, and smooth focusing performance, and this motor also offers snappy manual focus performance for fine-tuned control.