Sigma AF 10-20mm F4-5.6 EX DC Lens
The Sigma 10-20mm f/4-5.6 is a 10–20mm f/4 lens designed for Canon EF, Nikon F, Sony A, Pentax K mount cameras. Used copies start from $145.18 on GearFocus, with buyer protection on every purchase.
Sigma AF 10-20mm F4-5.6 EX DC Lens
Used Sigma 10-20mm f/4-5.6 Listings on GearFocus
Lens Overview — Sigma 10-20mm f/4-5.6
Key Features — Sigma 10-20mm f/4-5.6
10-20mm Ultra-Wide Zoom: Covers an expansive focal range on APS-C cameras, equivalent to approximately 15-30mm in full-frame terms, well suited for landscapes, architecture, and interiors.
APS-C Exclusive Design: Optimized image circle for APS-C sensors maximizes optical performance within the format rather than correcting for unused coverage area.
f/4-5.6 Variable Aperture: Maximum aperture of f/4 at the wide end provides reasonable light gathering for a lens in this focal length category.
Four-Mount Compatibility: Available in Canon EF, Nikon F, Sony A, and Pentax K mounts, covering the majority of APS-C DSLR systems on the market.
Autofocus with Manual Override: Supports both autofocus and manual focus, giving shooters flexibility across a range of subjects and shooting conditions.
77mm Filter Thread: Standard 77mm filter size makes it straightforward to use common accessories like circular polarizers and ND filters.
Lens Specifications — Sigma 10-20mm f/4-5.6
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Architecture, Travel, Real Estate |
| Lens Type | Ultra Wide-Angle |
| Format | APS-C |
| Zoom/Prime | Zoom |
| Focal Length | 10–20mm |
| Maximum Aperture | f/4 |
| Camera System | DSLR |
| Lens Mount | Canon EF, Nikon F, Sony A, Pentax K |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 77mm |
Description — Sigma 10-20mm f/4-5.6
The Sigma AF 10-20mm f/4-5.6 EX DC is a zoom lens built for APS-C format DSLR cameras, spanning a 10–20mm focal length range in the wide-angle category. The variable maximum aperture of f/4–5.6 provides usable performance across the zoom range, while both autofocus and manual focus modes give photographers the flexibility to work across a range of shooting scenarios. The 77mm filter thread is a convenient and widely supported size, making it easy to attach popular accessories like circular polarizers.
Weighing in at 470g, the lens is practical for travel and field use without adding significant bulk to an APS-C kit. Mount options span Canon EF, Nikon F, Sony A, and Pentax K, making this lens accessible to shooters across the major APS-C DSLR platforms. Note that image stabilization is not present, so handheld shooting in dim conditions will require attention to shutter speed settings.
Pros — Sigma 10-20mm f/4-5.6
- ✓Wide 10–20mm focal length range delivers a broad ultra-wide perspective on APS-C cameras
- ✓Available in four mounts — Canon EF, Nikon F, Sony A, and Pentax K — covering most major APS-C DSLR systems
- ✓Supports both autofocus and manual focus for flexible shooting control
Cons — Sigma 10-20mm f/4-5.6
- ✗No image stabilization, which can be a limitation in lower light conditions
- ✗Variable maximum aperture of f/4–5.6 means reduced light-gathering at the longer end of the zoom range
- ✗APS-C-only format limits this lens to crop-sensor bodies exclusively
Reviews — Sigma 10-20mm f/4-5.6
Videos — Sigma 10-20mm f/4-5.6
Sigma 10-20mm f/4-5.6 DC HSM lens review (with samples) — Christopher Frost