Photo: Henry Söderlund from Helsinki, Finland (CC BY 2.0)
Quick answer
A specialty portrait lens for E-mount using Smooth Trans Focus apodization for very smooth out-of-focus areas. It offers f/2.8 with an effective T5.6 transmission.
Pros
- Unusually smooth bokeh
- Optical SteadyShot
- Autofocus remains available
Cons
- Apodization element reduces light transmission (T5.6)
- Not a macro lens
Verdict
Consider it a specialist tool for photographers who prize bokeh quality. Not a general-purpose telephoto.
About this lens
A 100mm f/2.8 full-frame short-telephoto prime lens, the Sony FE 100mm F2.8 STF GM OSS is designed for Sony E mount bodies, from the Sony G Master series with optical stabilization. The focal length is a classic choice for portraits and details.
Sony FE 100mm F2.8 STF GM OSS specifications
- Brand
- Sony
- Mount
- Sony E
- Focal length
- 100mm
- Maximum aperture
- f/2.8
- Lens type
- Prime
- Format coverage
- full-frame
- Released
- 2017
- Image stabilization
- Yes
- Minimum focus distance
- 0.57 m
- Maximum magnification
- 0.25x
- Filter thread
- 72 mm
- Weight
- 700 g
- Length
- 118.1 mm
- Diameter
- 85.2 mm
Specification source: en.wikipedia.org
What can you shoot with the Sony FE 100mm F2.8 STF GM OSS?
- Portraits with smooth backgrounds
- Studio work
- Still life
Its bright maximum aperture handles indoor and evening light reasonably well.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 100mm | 20.4° | 24.4° |
| APS-C | 1.5x | 150mm | 13.7° | 16.4° |
Frequently asked questions
What does STF mean?
Smooth Trans Focus, a design using an apodization element to smooth out-of-focus areas.
Is the Sony FE 100mm F2.8 STF GM OSS a macro lens?
No. It focuses to about 0.57 m for roughly 0.25x magnification, not 1:1.
Does the FE 100mm F2.8 STF GM OSS autofocus?
Yes. It offers autofocus, and the STF effect is produced optically by the apodization element.
Alternatives for Sony E from other brands
All Sony E lensesSame mount, overlapping focal range, closest maximum aperture first.
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