Sony FE 400-800mm F6.3-8 G OSS

Go long with the first¹¹ α Lens: 400-800 mm super-telephoto zoom

The FE 400-800mm F6.3-8 G OSS is the first¹¹ α Lens to cover a 400 mm to 800 mm super-telephoto range. An optional 2x teleconverter can extend maximum focal length to 1600 mm. The internal zoom means the length of the lens does not change, and the centre of gravity stays within a small range for stable handling. Smooth, easy zoom ring rotation allows precise zooming, while careful design prevents accidental focal length changes.

Cutting-edge optical design gives high resolution and natural bokeh throughout the zoom range

Six ED (Extra-low Dispersion) glass elements effectively control chromatic aberration. Flare and ghosting in backlit conditions are also thoroughly suppressed. An 11-blade circular aperture helps to create beautiful ball bokeh amid exceptionally smooth, creamy background bokeh when shooting with a narrow depth of field.

Fast, precise AF captures even fast-moving subjects

Two precision linear motors drive the lens’s focus group for fast, accurate focusing. Tracking easily keeps up with the 120 fps¹² maximum burst speed of the α9 III, and continues uninterrupted even while zooming so important moments are not lost. A focus-range limiter (FULL / 10m-NEAR / ∞-8m) can be used to optimise operation for different subject distances. Focus breathing is suppressed for refined movie quality and quiet operation expands the gamut of possible applications.

Solid support for handheld or tripod-mounted shooting

The optically stabilised FE 400-800mm F6.3-8 G OSS extends to 800 mm, but weighs just 2475 g (87.4 oz) and can be used handheld without shake-induced blur. Stabilisation is even better with an α body that includes image stabilisation. When using a tripod, the mount foot can be quickly rotated for horizontal or vertical orientation. Durable components, optimised balance, and a non-removable foot maximise reliability and performance.

High-level control and reliability for any situation

Three focus hold buttons at 90° increments around the barrel allow easy access in any orientation. Other functions can be assigned to the buttons as needed. Internal zoom and a dust/moisture resistant design¹³ maximise reliability. The front element has a fluorine coating that repels contaminants and makes the lens easier to clean. The lens hood is a new design with a lock button and filter opening for easy operation.

Lens Configuration

Impeccable Sony G Lens design emphasises a graceful balance between high resolution and gorgeous background bokeh that can enhance the artist’s vision.

[1] 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] At 400 mm / Max. aperture
[4] At 400 mm / F8 aperture
[5] At 800 mm / Max. aperture
[6] At 800 mm / F8 aperture
[7] Spatial frequency
[8] 10 line pairs / mm
[9] 30 line pairs / mm
[10] Radial values
[11] Tangential values

¹¹As of the February 2025 product announcement.

¹²Sony test conditions. Maximum continuous shooting speed may be lower in some conditions. Continuous shooting speed may vary in the AF-C focus mode.

¹³Not guaranteed to be 100% dust and moisture proof.