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Sigma AF 400mm F5.6 Tele MC Lens

The Sigma AF 400mm f/5.6 is a 400mm f/5.6 lens designed for Canon EF, Nikon F, Sony A mount cameras. Used copies start from $85 on GearFocus, with buyer protection on every purchase.

Sigma AF 400mm F5.6 Tele MC Lens

Sigma AF 400mm F5.6 Tele MC Lens

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Sigma 400mm f5.6 Telephoto Lens Pentax K Mount

Condition: Good

Product Highlights

  • 400mm telephoto focal length
  • Maximum aperture of f/5.6
  • Multi-coated optics for reduced flare
  • Lightweight and portable design

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Used Sigma AF 400mm f/5.6 Listings on GearFocus

Sigma 400mm f5.6 Telephoto Lens Pentax K Mount
Sigma 400mm f5.6 Telephoto Lens Pentax K Mount

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$85.00

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Lens Overview — Sigma AF 400mm f/5.6

The Sigma AF 400mm F5.6 Tele MC is a prime telephoto lens built for full-frame DSLR systems, offering a fixed 400mm focal length well-suited to wildlife, sports, and other distant-subject photography. With a maximum aperture of f/5.6, it delivers a consistent exposure value across its focal range, as you'd expect from a prime design. The lens supports both autofocus and manual focus operation, giving shooters flexibility depending on the shooting scenario.

At 850g, it sits in a manageable weight class for a 400mm telephoto, making it a viable option for photographers who need reach without committing to the bulk of heavier super-telephoto lenses. It accepts 72mm filters, a relatively accessible filter size that keeps accessory costs reasonable. Mount compatibility is a genuine strength here — the lens is available for Canon EF, Nikon F, and Sony A camera systems, covering a broad range of full-frame and crop-sensor DSLRs across multiple brands.

There is no image stabilization included, so shooters will need to account for that when selecting shutter speeds or using support systems. Overall, this is a straightforward, mount-versatile 400mm prime for DSLR users.

Key Features — Sigma AF 400mm f/5.6

400mm Prime Focal Length: A fixed 400mm focal length provides dedicated telephoto reach for wildlife, sports, and distant-subject photography without the optical compromises of a zoom design.

f/5.6 Maximum Aperture: Consistent f/5.6 aperture across the full focal length gives predictable exposure settings in the field.

Full-Frame Coverage: Designed to cover a full-frame image circle, making it compatible with both full-frame and APS-C DSLR bodies.

Auto & Manual Focus: Supports both autofocus and manual focus operation, giving shooters flexibility across different shooting scenarios.

Three-Mount Compatibility: Available in Canon EF, Nikon F, and Sony A mounts, covering a broad range of DSLR systems from multiple brands.

850g Manageable Weight: At 850g, this lens is relatively lightweight for a 400mm prime, making handheld and travel use more practical.

Lens Specifications — Sigma AF 400mm f/5.6

Sigma AF 400mm f/5.6 full specifications
SpecDetail
Use CasesWildlife, Sports, Birding
Lens TypeTelephoto
FormatFull Frame
Zoom/PrimePrime
Focal Length400mm
Maximum Aperturef/5.6
Camera SystemDSLR
Lens MountCanon EF, Nikon F, Sony A
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationNone
Filter Thread72mm

Description — Sigma AF 400mm f/5.6

The Sigma AF 400mm F5.6 Tele MC is a prime telephoto lens designed for full-frame DSLR camera systems. It delivers a fixed 400mm focal length with a maximum aperture of f/5.6, making it a dedicated long-reach option for photographers targeting distant subjects. The lens is offered in Canon EF, Nikon F, and Sony A mounts, giving it broad compatibility across major DSLR platforms.

Focus options include both autofocus and manual focus, accommodating different shooting preferences and situations. Weighing 850g, it offers a practical balance of reach and portability for a telephoto prime in this class. The 72mm filter thread allows for use of standard filter accessories.

Note that image stabilization is not included, so a stable shooting platform or appropriate shutter speed selection is important when shooting at this focal length.

Pros — Sigma AF 400mm f/5.6

  • ✓Fixed 400mm focal length on a full-frame compatible design offers dedicated telephoto reach
  • ✓Available in Canon EF, Nikon F, and Sony A mounts, covering a wide range of DSLR systems
  • ✓Supports both autofocus and manual focus modes for shooting flexibility

Cons — Sigma AF 400mm f/5.6

  • ✗No image stabilization, which can be a challenge at 400mm without a tripod or fast shutter speeds
  • ✗Maximum aperture of f/5.6 limits performance in lower-light conditions
  • ✗Prime design means no zoom flexibility — focal length is fixed at 400mm

Videos — Sigma AF 400mm f/5.6

Sigma 400mm f:5 6 Prime Lens Review Part I — Mike Thomas

Resources & Downloads — Sigma AF 400mm f/5.6

Manuals & Guides

Frequently Asked Questions — Sigma AF 400mm f/5.6

Which camera mounts is the Sigma AF 400mm F5.6 Tele MC compatible with?+
This lens is available in Canon EF, Nikon F, and Sony A mounts. It is designed for DSLR camera systems and covers full-frame sensors. Mirrorless mount options are not listed in the specifications.
Does this lens have image stabilization?+
No. The specifications confirm that image stabilization is listed as 'None.' Photographers shooting at 400mm should plan accordingly, using a tripod, monopod, or sufficiently fast shutter speeds to minimize camera shake.
What filter size does the Sigma AF 400mm F5.6 Tele MC use?+
The lens has a 72mm filter thread size. This is a fairly common filter diameter, so compatible polarizers, ND filters, and other accessories are widely available.
How heavy is this lens?+
The lens weighs 850g according to the specifications. For a 400mm prime telephoto, this is a relatively portable option, though handheld use at this focal length without stabilization still warrants careful technique.
Is this lens a zoom or a prime?+
It is a prime lens with a fixed focal length of 400mm. There is no zoom range — the minimum and maximum focal length are both 400mm as listed in the specifications.
Does the lens support autofocus?+
Yes. The specifications confirm that autofocus is supported, and the focus type is listed as both Auto and Manual, allowing the shooter to switch between the two modes as needed.

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