Sigma AF 100-400mm F5-6.3 DG DN OS Lens
The Sigma 100-400mm f/5-6.3 is a 100–400mm f/5 lens designed for Sony E, L Mount Alliance mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma AF 100-400mm F5-6.3 DG DN OS Lens
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Lens Overview — Sigma 100-400mm f/5-6.3
Key Features — Sigma 100-400mm f/5-6.3
100-400mm Focal Range: Covers wide telephoto to extreme reach in a single lens, suited for wildlife, sports, and travel shooting.
Full-Frame Mirrorless Design: Built specifically for mirrorless systems and covers the full-frame image circle, while remaining fully compatible with APS-C bodies.
Sony E & L-Mount Compatible: Available in both Sony E and L-Mount versions, making it accessible to shooters across two major mirrorless ecosystems.
Optical Image Stabilization: Built-in OS system helps reduce camera shake when handholding at longer focal lengths where movement is amplified.
f/5-6.3 Maximum Aperture: Opens to f/5 at the wide end and f/6.3 at 400mm, a typical variable aperture characteristic for telephoto zooms in this class.
Autofocus & Manual Focus: Supports both AF and MF modes, allowing shooters to switch between tracking fast-moving subjects and precise manual control.
Lens Specifications — Sigma 100-400mm f/5-6.3
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Travel |
| Lens Type | Zoom |
| Format | Full Frame |
| Zoom/Prime | Zoom |
| Focal Length | 100–400mm |
| Maximum Aperture | f/5 |
| Camera System | Mirrorless |
| Lens Mount | Sony E, L Mount Alliance |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | Optical |
| Filter Thread | 67mm |
Description — Sigma 100-400mm f/5-6.3
The Sigma AF 100-400mm F5-6.3 DG DN OS is a full-frame telephoto zoom designed from the ground up for mirrorless systems, available in Sony E-Mount and L-Mount configurations. Its 100–400mm focal length range covers a broad telephoto spectrum, making it suited to subjects that require reach and versatility. Built-in optical image stabilization provides an added layer of stability for handheld shooting.
The lens opens to a maximum aperture of f/5 at 100mm, adjusting to f/6.3 at the 400mm end. Both autofocus and manual focus are supported, allowing shooters to adapt their approach depending on the situation. Lens-side compatibility with the 67mm filter thread standard keeps accessory costs accessible, and the lens weighs 1,135g — a reflection of the full-frame optical design across this zoom range.
Whether mounted on a Sony E or L-Mount body, this Sigma zoom delivers a capable telephoto reach for mirrorless photographers.
Pros — Sigma 100-400mm f/5-6.3
- ✓Wide focal length range from 100mm to 400mm suits a variety of telephoto shooting scenarios
- ✓Compatible with both Sony E and L-Mount mirrorless systems, offering broad ecosystem coverage
- ✓Built-in optical image stabilization helps control camera shake at longer focal lengths
Cons — Sigma 100-400mm f/5-6.3
- ✗Maximum aperture of f/5–6.3 limits light-gathering capability, particularly at the 400mm end
- ✗At 1,135g, the lens is a substantial addition to any mirrorless kit and may require additional support
- ✗Variable maximum aperture means exposure settings shift when zooming through the focal range
Videos — Sigma 100-400mm f/5-6.3
SIGMA 100-400 E-Mount REVIEW: The BEST SUPER ZOOM Lens for SONY — Jared Polin