Sigma AF 18-50mm F2.8 DC EX HSM Macro Lens
The Sigma 18-50mm f/2.8 HSM Macro is a 18–50mm f/2.8 lens designed for Canon EF, Nikon F, Sony A mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma AF 18-50mm F2.8 DC EX HSM Macro Lens
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Lens Overview — Sigma 18-50mm f/2.8 HSM Macro
Key Features — Sigma 18-50mm f/2.8 HSM Macro
Constant f/2.8 Aperture: Maintains f/2.8 throughout the entire zoom range, ensuring consistent exposure and depth-of-field control whether shooting at 18mm or 50mm.
18-50mm Zoom Range: Covers wide-angle to short telephoto on APS-C sensors, equivalent to roughly 27-75mm in full-frame terms, making it versatile for everyday and travel shooting.
APS-C Format Design: Optimized for crop-sensor DSLRs, with an image circle matched to APS-C to keep size and weight lower than full-frame equivalents.
HSM Autofocus Motor: Hyper Sonic Motor delivers fast, quiet autofocus operation well-suited to both stills and candid shooting.
Macro Capability: Offers a closer-than-average minimum focus distance with macro designation, allowing for detailed close-up shooting without a dedicated macro lens.
EX Build Quality: Sigma's EX series construction uses higher-grade materials and tighter tolerances for improved durability and handling feel.
Lens Specifications — Sigma 18-50mm f/2.8 HSM Macro
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Landscape, Macro, Travel, Product |
| Lens Type | Zoom |
| Format | APS-C |
| Zoom/Prime | Zoom |
| Focal Length | 18–50mm |
| Maximum Aperture | f/2.8 |
| Camera System | DSLR |
| Lens Mount | Canon EF, Nikon F, Sony A |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 72mm |
Description — Sigma 18-50mm f/2.8 HSM Macro
The Sigma AF 18-50mm F2.8 DC EX is a zoom lens designed for APS-C format DSLR cameras, covering a focal length range of 18–50mm with a constant maximum aperture of f/2.8. That consistent wide aperture across the full zoom range means you get the same light-gathering capability and depth-of-field control whether you're at the wide end or zoomed in. The lens is compatible with Canon EF, Nikon F, and Sony A mounts, covering a broad spread of APS-C DSLR platforms.
It supports both autofocus and manual focus, offering flexibility across different shooting conditions. A 72mm filter thread accommodates standard filters, and the lens tips the scales at 450g — a reasonable weight for a constant-aperture zoom. Note that image stabilization is not available on this lens, so steadying technique matters more in challenging light.
Built squarely for the APS-C sensor format, this lens is intended for crop-sensor DSLR use.
Pros — Sigma 18-50mm f/2.8 HSM Macro
- ✓Constant f/2.8 maximum aperture maintained throughout the 18–50mm zoom range
- ✓Broad mount compatibility covering Canon EF, Nikon F, and Sony A systems
- ✓Supports both autofocus and manual focus operation
Cons — Sigma 18-50mm f/2.8 HSM Macro
- ✗No image stabilization, which can be limiting in handheld low-light situations
- ✗APS-C-only format limits use to crop-sensor bodies; not compatible with full-frame sensors
- ✗50mm maximum focal length may feel restrictive for users needing more reach
Reviews — Sigma 18-50mm f/2.8 HSM Macro
Videos — Sigma 18-50mm f/2.8 HSM Macro
Sigma 17-50mm f/2.8 OS HSM lens review (with samples) — Christopher Frost