Sigma AF 80-400mm F4.5-5.6 APO DG OS EX Lens
The Sigma 80-400mm f/4.5-5.6 is a 80–400mm f/4.5 lens designed for Canon EF, Nikon F mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma AF 80-400mm F4.5-5.6 APO DG OS EX Lens
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Lens Overview — Sigma 80-400mm f/4.5-5.6
Key Features — Sigma 80-400mm f/4.5-5.6
80-400mm Telephoto Zoom: Covers a wide range of telephoto focal lengths in a single lens, suited for wildlife, sports, and travel shooting.
APO DG Optical Design: Apochromatic glass elements minimize chromatic aberration and color fringing, particularly important at longer focal lengths.
Built-In Optical Stabilization: Sigma's OS system reduces camera shake during handheld shooting, which is especially valuable at the 400mm end of the range.
f/4.5-5.6 Variable Aperture: Maximum aperture shifts from f/4.5 at 80mm to f/5.6 at 400mm, typical for a zoom of this reach and size.
Full-Frame Compatible: Designed to cover a full-frame image circle, making it usable on both full-frame and APS-C DSLR bodies.
Canon EF & Nikon F Mounts: Available in two of the most widely used DSLR mount systems for broad camera compatibility.
Lens Specifications — Sigma 80-400mm f/4.5-5.6
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Travel |
| Lens Type | Zoom |
| Format | Full Frame |
| Zoom/Prime | Zoom |
| Focal Length | 80–400mm |
| Maximum Aperture | f/4.5 |
| Camera System | DSLR |
| Lens Mount | Canon EF, Nikon F |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | Optical |
| Filter Thread | 77mm |
Description — Sigma 80-400mm f/4.5-5.6
The Sigma AF 80-400mm F4.5-5.6 APO DG OS EX is a full-frame telephoto zoom lens built for Canon EF and Nikon F DSLR systems. Its 80-400mm focal length range delivers meaningful reach across a wide variety of telephoto scenarios, from moderate compression at 80mm through to serious reach at 400mm. The maximum aperture varies from f/4.5 at the wide end to f/5.6 at the telephoto end, which is characteristic of large-range telephoto zooms. Optical image stabilization is integrated into the lens, offering a practical advantage when shooting handheld at longer focal lengths where camera shake becomes a more significant factor.
Both autofocus and manual focus modes are supported, giving shooters control over how they acquire and track focus. The 77mm filter thread accommodates a wide selection of readily available filters. At 1,750g, the lens carries considerable weight, and users should factor that into their kit planning.
Designed for full-frame coverage, it is equally usable on APS-C DSLR bodies in compatible mounts.
Pros — Sigma 80-400mm f/4.5-5.6
- ✓Wide focal length range of 80-400mm provides versatile telephoto coverage in a single lens
- ✓Built-in optical image stabilization helps reduce camera shake during handheld shooting
- ✓Full-frame lens design (lensFormat: Full Frame) ensures compatibility across both full-frame and APS-C DSLR bodies
Cons — Sigma 80-400mm f/4.5-5.6
- ✗At 1,750g, this lens is quite heavy and can be fatiguing during extended handheld sessions
- ✗Variable maximum aperture of f/4.5-5.6 means reduced light gathering at the telephoto end
- ✗Limited mount options — only Canon EF and Nikon F are supported, with no mirrorless-native mount available
Videos — Sigma 80-400mm f/4.5-5.6
SIGMA 100-400 F5-6.3 DG OS is a 4X MEGA-Zoom Lens Priced to Sell: VS Canon 100-400 and Nikon 80-400 — Jared Polin