Sony FE 100mm f2.8 STF GM OSS Lens

Focal Length	100mm
Aperture	Maximum: f/2.8 Minimum: f/20
Lens Mount	Sony E with Included Adapter
Lens Format Coverage	Full-Frame
Angle of View	24°
Minimum Focus Distance	1.87' / 57 cm
Magnification	1:4 Macro Reproduction Ratio 0.25x Magnification
Optical Design	14 Elements in 10 Groups
Aperture/Iris Blades	11, Rounded
Focus Type	Autofocus
Image Stabilization	Yes
Filter Size	72 mm (Front)
Dimensions	ø: 3.35 x L: 4.65" / ø: 85.2 x L: 118.1 mm
Weight	1.54 lb / 700 g

The Bokeh Master

Delivering both smooth bokeh and fine sharpness, 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.

Sony FE 100mm F2.8 STF GM OSS | Lens Expert Tips

First Look: Sony FE 2.8/100mm STF, FE 1.8/85mm, and HVL-F45RM Flash

Smooth Trans Focus

• Optical design incorporates an apodization (APD) element that helps to improve the quality of bokeh. This element, which resembles a radially graduated ND filter that tapers from clear in the center to denser around the edges, produces more circular out-of-focus highlights for more pleasing selective focus and shallow depth of field effects.
• An aperture range of f/2.8 to f/20 is available, however the implementation of the apodization filter renders this range as T5.6 to T22.
• A rounded 11-blade diaphragm further contributes to a pleasing bokeh quality when employing shallow depth of field techniques.

G Master Optics

G Master lenses prioritize sharpness and bokeh quality by featuring advanced optical designs and specialized elements.

• One extra-low dispersion (ED) element reduces color fringing and chromatic aberrations while one aspherical element controls spherical aberrations for improved clarity and sharpness.
• Optical layout has also been designed to reduce peripheral highlight distortion due to vignetting in order to achieve rounder out-of-focus highlights in both the foreground and background.
• A Nano AR Coating has been applied to reduce surface reflections, flare, and ghosting for increased contrast and color rendering in strong lighting conditions.

Autofocus and Macro Switching

• Direct Drive Super Sonic wave Motor AF system provides quick, quiet, and precise autofocus performance and also contributes to more natural, intuitive manual focus control.
• Internal focusing design offers more responsive focusing performance and maintains a consistent overall lens length during operation.

• Macro switching ring allows you to choose between two focusing ranges: 2.8' to infinity or a closer range of 1.9-3.3'.
• Maximum magnification of 0.25x at minimum focus allows for near-macro capabilities for true close-up detail shooting.
• Customizable focus hold button on lens barrel can be used to hold the focusing position, or can be set in-camera to control a variety of additional lens functions.