Delivering both smooth bokeh and fine sharpness, the FE 100mm f/2.8 STF
GM OSS Lens from Sony is a short-telephoto prime featuring a unique, yet
sophisticated optical design. Separating itself from other
portrait-length lenses, this 100mm f/2.8 features Smooth Trans Focus
technology, which uses an apodization filter to realize notably smooth
bokeh with rounded out-of-focus highlights in both the foreground and
background. Contributing to a high degree of sharpness and clarity, the
lens also incorporates one aspherical element and one extra-low
dispersion element to suppress both spherical and chromatic aberrations.
Additionally, a Nano AR coating has also been applied to reduce lens
flare and ghosting for greater contrast and color fidelity when working
in strong lighting conditions.
Complementing the optics, this lens also sports a robust physical
construction that is dust- and moisture-sealed for use in trying
conditions. It is also an apt performer, and utilizes a Direct Drive SSM
to afford quick, quiet, and smooth autofocus performance. A ring-switch
permits selecting between two focusing ranges, including a dedicated
close-up range for working with subjects as close as 1.9' away with a
0.25x maximum magnification. Additionally, Optical SteadyShot image
stabilization further contributes to producing sharp images when
shooting handheld by minimizing the appearance of camera shake.