Sony FE 100mm f/2.8 STF GM OSS Lens Features:

E-Mount Lens/Full-Frame Format
Apodization Element for Smooth Bokeh
Nano AR Coating
Optical SteadyShot Image Stabilization
Macro Switching Ring; Focus Hold Button
Aperture Range: f/2.8 to 20 | T5.6 to 22
One Aspherical Element & One ED Element
Direct Drive Super Sonic Wave AF Motor
Physical Aperture Ring; De-Click Switch
Eleven-Blade Circular Diaphragm

What's In the Box:
Sony FE 100mm f/2.8 STF GM OSS Lens
Sony ALC-F72S 72mm Front Lens Cap
Sony ALC-R1EM Rear Lens Cap
Sony ALC-SH147 Lens Hood
Lens Case

This K&M Bundle Also Includes:
(1) 72mm UV Filter
(1) 5-Piece Camera & Lens Cleaning Kit with Blower Brush, Fluid, Cloth, Tissues & Tips
(1) Cleaning Lens Pen
(1) Lens Cap Keeper
(1) Microfiber Cleaning Cloth

the FE 100mm f/2.8 STF GM OSS from Sony is a short-telephoto prime featuring a unique and sophisticated optical design. Separating itself from other portrait-length lenses, this 100mm f/2.8 features Smooth Trans Focus (STF) technology, which uses an apodization filter to realize notably smooth bokeh with rounded out-of-focus highlights in both the foreground and background.