Sony FE 100mm f/2.8 STF GM OSS

STF^TM Delivers Incomparable Bokeh and Sharpness

This 100mm mid-range telephoto prime lens is a superb creative tool that offers outstanding G Master resolution plus innovative STF (Smooth Trans Focus) optics for magnificent bokeh. It features fast, precise, quiet DDSSM autofocus, and close-up capability up to 0.25x magnification. Built-in Optical SteadyShot image stabilisation minimizes blur that can occur during low light or macro shooting.²

Exemplary G Master Resolution and Bokeh

A fitting addition to the G Master series, this lens combines extraordinary resolution and breathtakingly soft, smooth bokeh that ideally sets off the in-focus subject. The optical design, featuring an innovative optical apodization element and new 11-blade aperture, achieves consistently high performance throughout the image area.

Bokeh Doesn't Get Better Than This

Specifically designed to produce extraordinarily smooth, natural bokeh, this lens features a unique optical apodization (APD) element, a newly designed 11-blade circular aperture, and minimal highlight distortion at the image periphery. Each lens is individually fine-tuned to ensure that the highest G Master standards are realized.

Resolution True to the G Master Name

With spherical aberration compensation, ED (Extra-low Dispersion) glass, and aspherical elements, this lens boasts extreme resolution and sharpness that fulfill the demanding 50 lines per millimeter MTF requirement that is a basis for G Master optical design. That sharpness extends throughout image area.

AF that Lets You Concentrate on Creating

A DDSSM (Direct Drive SSM) focus drive system provides fast, precise, quiet autofocus. Fast, unobtrusive AF performance allows the user to concentrate fully on capturing superlative stills or movies. This lens supports both contrast AF and focal plane phase detection AF, making it an ideal match for modern high-performance Sony camera bodies.

Beautiful Peripheral Highlights

In keeping with this lens’s emphasis on bokeh, it has been designed to minimize vignetting that can distort highlight geometry at the image periphery. Point light sources are reproduced with consistently circular bokeh throughout the image, so that sunlight filtering through or reflecting off leaves, for example, is rendered with serene elegance.

Apodization for Unbeatable Bokeh

An optical APD element is a special type of filter that exhibits gradually decreasing light transmission towards its periphery. It attenuates the edges of point images, resulting in exceptionally smooth, beautiful bokeh in both background and foreground areas with an absolute minimum of double-edge effects.³

11 Blades Enhance Bokeh Beauty

Sony’s original circular aperture design has been improved with 11 blades for even greater circularity. Design and materials have been revised to ensure that a almost round aperture shape is maintained whether open or stopped down, and strict circularity standards are applied to ensure that the full beauty of STF bokeh is achieved without compromise.

Get Close and Explore the Details

Because one of the main features of this lens is bokeh, it has been provided with a macro ring switch that extends the lens’s range into the macro region where bokeh can be used to great effect. The macro mode provides 0.57m (1.87 ft.) minimum focus with 0.25x maximum magnification, with no compromise in resolution performance.

Professional Handling and Control

Other advanced features that enhance operation for still photography and moviemaking include an aperture ring⁴, switchable aperture ring click stops, a Focus Hold button, an AF/MF focus select switch, and a wide focus ring for sure, comfortable control.

Clear, Blur-Free Images without a Tripod

Optical SteadyShot image stabilisation is built in, making it possible to achieve maximum subject sharpness with the lower shutter speeds. Image stabilisation in a 100mm mid-range telephoto lens is an advantage for professionals and amateurs alike. Second-generation α7 bodies additionally provide in-body 5-axis stabilisation.

Advanced Actuators for Speed and Precision

DDSSM (Direct Drive SSM) employs an original Sony piezoelectric motor to directly drive the focus ring. High braking precision means that the focus ring is precisely controlled for the highest possible focus accuracy. It’s quiet too, making it ideal for shooting wildlife as well as movies. Manual focus is also smooth and responsive.

High Reliability in Harsh Conditions

In addition to a rubber seal ring at the mount, the overall design of this lens is dust and moisture resistant for extra protection and reliable operation in challenging environments. Shoot with confidence in light rain or windy conditions.¹

Lens Configuration

G Master series lenses take imaging and expression to previously unattainable levels with a stunning blend of extremely high resolution and softly dissolving background bokeh.

[1] APD
[2] Aspherical Lens
[3] ED (Extra-Low Dispersion) Glass

MTF Chart

MTF (Modulation Transfer Function) describes how well a lens can reproduce fine details, measured as the degree of contrast achieved between finely spaced lines.

[1] Contrast (%)
[2] Distance from optical center of lens (mm)
[3] Max. aperture
[4] F8 aperture
[5] Spatial frequency
[6] 10 line pairs / mm
[7] 30 line pairs / mm
[8] Radial values
[9] Tangential values

Lens Control

1. Focusing Ring
2. Aperture Ring
3. Macro Switching Index
4. Macro Switching Scale
5. Focus Hold Button (Customisable)
6. Aperture Click Switch
7. Shake Compensation Switch
8. Focus Mode Switch
9. Macro Switching Ring
10. Macro Switching Unlock Button

11. Mounting Index
12. Aperture⁵ Scale
13. Lens Contacts
14. Lens Mount Rubber Ring
15. Aperture Index
16. Lens Hood Index

¹ Not guaranteed to be 100% dust- and moisture-proof.

² T (transmission) number at the largest aperture is 5.6.

³ The apodization element provides its effect when the aperture is set within the range between T5.6 and T8.

⁴ T No. (T-Numbers) : the T No. is a practical value that indicates how much light is in the lens, allowing for the lens’s transmission rate. Although this lens’s wide-open aperture is F2.8, the optical apodization element provides the light amount of T5.6, which is the same as that of F5.6 on a normal lens.

⁵ The “A” markings are equivalent to the F-numbers on conventional cameras. The “T” makings should be used for determining exposure with this lens (they represent the lens’s brightness based on actual light transmission).