CameraReview
CompareCamerasLensesAction CamerasGuides
Sony FE 400-800mm F6.3-8 G OSS
—
UNSCORED
Sony · f/6.3 · Sony E mount

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

Where to buy — 2 offers
Mount
KEY FACTS
BrandSony
Release Year2025
Production StatusIn Production
Pro BrandingG
Lens MountSony E
What We Like
+Exceptional 800mm reach—Sony's longest telephoto zoom with outstanding native focal length capability
+Internal zoom mechanism ensures stable center of gravity and consistent handling throughout the range
+Impressive optical sharpness across the zoom range with excellent performance above 90% at 400mm and near 100% at 800mm
+Fast and precise autofocus with dual linear motors tracking at 120fps on Sony a9III with subject detection capability
+Weather-sealed construction with dust/moisture resistance and fluorine-coated front element for durability
+Well-balanced design with short 90-degree zoom throw and effective Optical SteadyShot stabilization with three modes
Worth Knowing
−Large and heavy at 2475g with 346mm length—requires monopod support for extended handheld shooting
−Variable f/6.3-8 aperture severely limits low-light autofocus speed and indoor sports performance
−Expensive 105mm filters required, and premium pricing at ~$2900 compared to 200-600mm alternative
−Slower autofocus performance in dim lighting conditions; not suited for fast-moving action in poor light

General

Brand
Sony
Release Year
2025
Production Status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Pro Branding
ⓘ
Specific branding codes used for professional-tier lenses.
G
Lens Mount
ⓘ
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Sony E
System
ⓘ
Indicates which camera system the lens is designed to attach to.
Sony E
Maximum Format
ⓘ
Largest sensor size compatible with the lens.
Full Frame
Read our notes on general
The Sony FE 400-800mm F6.3-8 G OSS offers a long range of super-telephoto focal lengths reaching 800mm in a relatively compact, handheld-weight, weather-sealed body with very good image quality. The internally zooming design allows for near-instant zooms, more consistent balance, and improved handling in the field, while dual linear motors track easily with the 120 fps maximum burst speed of the a9III with continuous AF even while zooming. The slow f/6.3-8 aperture struggles in dull light and is not fast enough for indoor sports, making this lens most compelling for dedicated wildlife and distant-subject photography where superior reach justifies its size and cost.

Physical

Lens Weight
2475 g
Front Filter Size
ⓘ
Diameter of attachable filters.
105 mm

Optics

Focal Range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
400–800 mm
Aperture Range
ⓘ
Largest aperture at the lens's shortest focal length to longest focal length (aperture range start - end)
6.3–8
Blades
ⓘ
Number of diaphragm blades in aperture
11020
Zoom Lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
Yes
Closest Focusing Distance
ⓘ
Minimum distance for a subject to be in focus.
170 cm01500
Autofocus Mode
Yes

Features

Weather Sealing
ⓘ
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Yes
Image Stabilization
Yes