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

The Sony FE 400-800mm f/6.3-8 G OSS is a 400–800mm f/6.3 lens designed for Sony E mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

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

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

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Lens Overview — Sony FE 400-800mm f/6.3-8 G OSS

The Sony FE 400-800mm F6.3-8 G OSS is a super-telephoto zoom lens built for Sony's full-frame E-mount mirrorless system. Covering a focal length range of 400mm to 800mm, it delivers exceptional reach for demanding subjects at distance, making it a compelling option for photographers who need flexible framing without swapping glass. The lens opens at f/6.3 at the wide end and f/8 at 800mm, offering a usable maximum aperture across the zoom range.

Optical image stabilization is built in, helping to counteract camera shake when shooting handheld at these extreme focal lengths. The lens uses a 95mm filter thread, accommodating large-format filters suited to the front element size. At 3,000g, the lens carries meaningful heft, which is expected at this focal length class, though it remains a single-lens solution for a range that would otherwise require multiple primes or a shorter zoom combined with a teleconverter.

It supports both autofocus and manual focus operation and is designed exclusively for Sony E-mount cameras, ensuring native communication and compatibility with Sony's full-frame mirrorless bodies. This is a zoom lens built for reach, flexibility, and stabilized shooting in the super-telephoto range.

Key Features — Sony FE 400-800mm f/6.3-8 G OSS

400-800mm Zoom Range: Covers an extreme super-telephoto range in a single lens, eliminating the need for multiple primes or a shorter zoom paired with a teleconverter.

F6.3-8 Maximum Aperture: Maintains a usable maximum aperture of f/6.3 at 400mm and f/8 at 800mm, supporting autofocus performance across the full zoom range.

Built-In Optical Stabilization: OSS helps counteract camera shake when shooting handheld at extreme focal lengths where even minor movement is amplified.

Full-Frame E-Mount Coverage: Designed for Sony's full-frame mirrorless system, delivering edge-to-edge coverage on bodies like the A1, A9 III, and A7R V without any crop factor penalty.

Native Sony E-Mount: Full electronic integration with Sony mirrorless bodies enables fast autofocus, in-body stabilization coordination, and real-time lens data communication.

Autofocus and Manual Focus: Supports both AF and MF operation, allowing shooters to switch seamlessly between tracking fast subjects and making precise manual corrections.

Lens Specifications — Sony FE 400-800mm f/6.3-8 G OSS

Sony FE 400-800mm f/6.3-8 G OSS full specifications
SpecDetail
Use CasesWildlife, Sports, Birding
Lens TypeZoom
FormatFull Frame
Zoom/PrimeZoom
Focal Length400–800mm
Maximum Aperturef/6.3
Camera SystemMirrorless
Lens MountSony E
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationOptical (OIS)
Filter Thread95mm

Description — Sony FE 400-800mm f/6.3-8 G OSS

The Sony FE 400-800mm F6.3-8 G OSS is a super-telephoto zoom lens covering a 400mm to 800mm focal length range, built natively for Sony E-mount full-frame mirrorless cameras. With a maximum aperture of f/6.3 at 400mm and f/8 at 800mm, the lens provides meaningful reach across its entire zoom range. Optical image stabilization is incorporated to assist with managing camera shake during handheld shooting at these demanding focal lengths. The lens supports both autofocus and manual focus, giving photographers flexibility in how they control focus acquisition.

A 95mm filter thread sits at the front of the lens, sized to match the large front element. The lens weighs 3,000g, a substantial but expected figure for a zoom covering this focal length range. Designed specifically for full-frame E-mount bodies, it delivers native compatibility with Sony's mirrorless camera lineup, making it a purpose-built tool for photographers who require extreme telephoto reach with stabilization and autofocus support in a single zoom package.

Pros — Sony FE 400-800mm f/6.3-8 G OSS

  • ✓Impressive 400-800mm focal length range (minFocalLength: 400, maxFocalLength: 800) provides substantial reach in a single lens
  • ✓Optical image stabilization (imageStabilization: Optical) aids handheld shooting at extreme telephoto lengths
  • ✓Supports both autofocus and manual focus (focusType: Auto, Manual) for flexible operation

Cons — Sony FE 400-800mm f/6.3-8 G OSS

  • ✗Maximum aperture of f/6.3-8 (maximumAperture: 6.3) is relatively slow, which may challenge autofocus performance and low-light shooting
  • ✗Weight of 3,000g (weight: 3000g) makes this a demanding lens to carry and handhold for extended periods
  • ✗Large 95mm filter thread (filterThreadSize: 95) means filters are expensive and less commonly available

Videos — Sony FE 400-800mm f/6.3-8 G OSS

SONY 400-800mm f6.3-8 REVIEW: The ULTIMATE “Budget” Birding / Wildlife ZOOM Lens?! (vs Sony 200-600) — Jared Polin

Resources & Downloads — Sony FE 400-800mm f/6.3-8 G OSS

Manuals & Guides

Frequently Asked Questions — Sony FE 400-800mm f/6.3-8 G OSS

What camera mount does this lens use?+
The Sony FE 400-800mm F6.3-8 G OSS is designed exclusively for Sony E-mount cameras. It is built for full-frame mirrorless bodies in the Sony E-mount system.
Does this lens have image stabilization?+
Yes, the lens features Optical image stabilization as specified in the product data. This helps reduce the effects of camera shake when shooting handheld at long focal lengths.
What is the maximum aperture of this lens?+
The lens has a maximum aperture of f/6.3 at the 400mm end and f/8 at 800mm. This variable aperture is typical for super-telephoto zoom lenses at this focal length range.
What filter size does this lens require?+
The lens uses a 95mm filter thread. Filters at this diameter are larger and less common than standard sizes, so budget accordingly when purchasing compatible filters.
How heavy is this lens?+
The lens weighs 3,000g. Photographers planning extended handheld sessions should consider appropriate support equipment given this weight.
Can I use this lens on a crop-sensor Sony E-mount camera?+
The lens is specified as Full Frame format and uses the Sony E mount. While Sony E-mount is shared between full-frame and APS-C bodies, the lens is designed and rated for full-frame coverage.

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