Sigma AF 10-20mm F4-5.6 DC HSM EX IF Lens
The Sigma 10-20mm f/4-5.6 DC HSM is a 10–20mm f/4 lens designed for Canon EF, Nikon F, Sony A, Pentax K, Sigma SA mount cameras. Used copies start from $94.86 on GearFocus, with buyer protection on every purchase.
Sigma AF 10-20mm F4-5.6 DC HSM EX IF Lens
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Lens Overview — Sigma 10-20mm f/4-5.6 DC HSM
Key Features — Sigma 10-20mm f/4-5.6 DC HSM
10-20mm Ultra-Wide Zoom: Covers an expansive focal length range that delivers a roughly 102° field of view at the wide end on APS-C sensors.
APS-C Dedicated Design: Purpose-built for crop-sensor DSLRs rather than adapted from a full-frame design, optimizing size and optical performance for the format.
HSM Autofocus Motor: Hyper Sonic Motor provides fast, quiet autofocus operation suitable for both stills and video use.
Internal Focus (IF): The front element does not rotate or extend during focusing, making it easier to use polarizing and graduated filters.
f/4-5.6 Variable Aperture: Opens to f/4 at 10mm and f/5.6 at 20mm, offering a workable maximum aperture across the zoom range.
Five Mount Options: Available in Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA mounts, covering a broad range of APS-C DSLR systems.
Lens Specifications — Sigma 10-20mm f/4-5.6 DC HSM
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Architecture, Travel, Real Estate |
| Lens Type | Zoom |
| 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, Sigma SA |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 77mm |
Description — Sigma 10-20mm f/4-5.6 DC HSM
The Sigma AF 10-20mm F4-5.6 DC HSM EX IF is a zoom lens designed for APS-C format DSLR camera systems. It covers a focal length range of 10mm to 20mm, placing it firmly in the wide-angle category and making it well suited to subjects that benefit from broad coverage. The maximum aperture ranges from f/4 at 10mm to f/5.6 at 20mm.
Weighing 470g, it is a moderately sized lens for its focal length range. The filter thread diameter is 77mm, compatible with a wide selection of filters. The lens supports both autofocus and manual focus operation.
It is offered across five mount options: Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA, making it one of the more broadly compatible options in its class. Note that image stabilization is not present on this lens, so photographers shooting in lower light or at slower shutter speeds should plan accordingly.
Pros — Sigma 10-20mm f/4-5.6 DC HSM
- ✓Wide 10-20mm focal length range offers an expansive field of view on APS-C sensors
- ✓Available across five mount systems: Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA
- ✓Both autofocus and manual focus are supported
Cons — Sigma 10-20mm f/4-5.6 DC HSM
- ✗No image stabilization included, as confirmed in specifications
- ✗Variable maximum aperture of f/4-5.6 limits light-gathering at the longer end of the zoom
- ✗Restricted to APS-C format DSLRs and not compatible with full-frame bodies
Reviews — Sigma 10-20mm f/4-5.6 DC HSM
Videos — Sigma 10-20mm f/4-5.6 DC HSM
Sigma 10-20mm f/4-5.6 DC HSM lens review (with samples) — Christopher Frost
Frequently Asked Questions — Sigma 10-20mm f/4-5.6 DC HSM
Which camera mounts is this lens available in?+
The lens is available in Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA mounts, covering a wide range of DSLR camera systems. Be sure to select the correct mount version for your specific camera body when purchasing.
Does this lens have image stabilization?+
No, the specifications confirm that image stabilization is listed as 'None' on this lens. Shooters who need stabilization will need to rely on in-body stabilization if their camera body supports it.
What sensor format is this lens designed for?+
This lens is designed for APS-C format DSLRs. It is not intended for full-frame camera bodies and is categorized specifically as an APS-C lens.
What is the filter thread size on this lens?+
The filter thread is 77mm, which is a widely used size compatible with many professional and enthusiast filter systems. This makes it relatively straightforward to use existing 77mm filters if you already own them.
Does this lens support autofocus?+
Yes, the lens supports both autofocus and manual focus operation. Both focus modes are confirmed in the specifications.