Sigma AF 18-125mm F3.5-5.6 DC Lens
The Sigma 18-125mm f/3.5-5.6 is a 18–125mm f/3.5 lens designed for Canon EF, Nikon F, Sony A, Pentax K mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma AF 18-125mm F3.5-5.6 DC Lens
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Lens Overview — Sigma 18-125mm f/3.5-5.6
Key Features — Sigma 18-125mm f/3.5-5.6
18-125mm Zoom Range: Covers wide-angle through moderate telephoto in a single lens, making it practical for travel, events, and everyday photography without swapping optics.
APS-C Format Design: Engineered specifically for APS-C sensor DSLRs, with image circle and optical corrections matched to that format.
f/3.5-5.6 Variable Aperture: Opens to f/3.5 at the wide end, with the maximum aperture stepping to f/5.6 as focal length increases toward 125mm.
Four Mount Options: Available in Canon EF, Nikon F, Sony A, and Pentax K mounts, covering the most widely used APS-C DSLR systems.
Autofocus with Manual Override: Supports autofocus for quick subject acquisition and manual focus for situations requiring precise control.
385g Compact Build: Lightweight construction makes it comfortable for extended handheld use and practical as an everyday carry lens.
Lens Specifications — Sigma 18-125mm f/3.5-5.6
| Spec | Detail |
|---|---|
| Use Cases | Travel, Landscape, Portrait |
| Lens Type | Zoom |
| Format | APS-C |
| Zoom/Prime | Zoom |
| Focal Length | 18–125mm |
| Maximum Aperture | f/3.5 |
| Camera System | DSLR |
| Lens Mount | Canon EF, Nikon F, Sony A, Pentax K |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 62mm |
Description — Sigma 18-125mm f/3.5-5.6
The Sigma AF 18-125mm f/3.5-5.6 DC is a zoom lens purpose-built for APS-C format DSLR cameras, covering a focal length range of 18mm to 125mm. The variable maximum aperture of f/3.5 at 18mm stepping to f/5.6 at 125mm is consistent with a lens of this zoom range. Both autofocus and manual focus are supported, giving photographers flexibility depending on the subject or shooting style.
The lens is available across four major DSLR mount systems — Canon EF, Nikon F, Sony A, and Pentax K — making it accessible to a wide range of APS-C shooters. Weighing in at 385g and accepting 62mm filters, this optic keeps a low profile in the bag and in the hand. One consideration worth factoring in: image stabilization is absent, so technique and shutter speed management become important, particularly when shooting toward the longer end of the zoom range.
Pros — Sigma 18-125mm f/3.5-5.6
- ✓Wide focal length range of 18–125mm covers standard zoom versatility in a single lens
- ✓Available in four mounts — Canon EF, Nikon F, Sony A, and Pentax K — offering broad DSLR compatibility
- ✓Supports both autofocus and manual focus modes for flexible shooting control
Cons — Sigma 18-125mm f/3.5-5.6
- ✗No image stabilization, which can be a limitation when shooting at 125mm or in low light
- ✗Variable maximum aperture of f/3.5–5.6 means light-gathering ability reduces as you zoom in
- ✗APS-C-only format (DC designation) means it cannot be used on full-frame bodies without vignetting
Videos — Sigma 18-125mm f/3.5-5.6
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