Sigma AF 15-30mm F3.5-4.5 EX DG ASPH IF Lens
The Sigma 15-30mm f/3.5-4.5 is a 15–30mm f/3.5 lens designed for Canon EF, Nikon F, Sony A, Pentax K, Sigma SA mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma AF 15-30mm F3.5-4.5 EX DG ASPH IF Lens
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Lens Overview — Sigma 15-30mm f/3.5-4.5
Key Features — Sigma 15-30mm f/3.5-4.5
15-30mm Zoom Range: Covers ultra-wide to moderate wide-angle in a single lens, useful for landscapes, architecture, and interior photography.
f/3.5-4.5 Maximum Aperture: Offers reasonable light-gathering capability across the zoom range for a wide-angle lens of this class.
Full-Frame Coverage: Projects a full image circle suitable for full-frame sensors with no vignetting, and works equally well on APS-C bodies.
EX DG Construction: Sigma's EX series designation indicates professional-grade build quality with improved materials and finish.
Aspherical Lens Elements: ASPH elements help control distortion and spherical aberration across the zoom range, which is particularly important at ultra-wide focal lengths.
Internal Focus Design: IF designation means the front element does not rotate or extend during focusing, which is practical when using graduated or polarizing filters.
Lens Specifications — Sigma 15-30mm f/3.5-4.5
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Architecture, Travel, Creative Effects |
| Lens Type | Zoom |
| Format | Full Frame |
| Zoom/Prime | Zoom |
| Focal Length | 15–30mm |
| Maximum Aperture | f/3.5 |
| Camera System | DSLR |
| Lens Mount | Canon EF, Nikon F, Sony A, Pentax K, Sigma SA |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Weight | 600g |
Description — Sigma 15-30mm f/3.5-4.5
The Sigma AF 15-30mm f/3.5-4.5 is a wide-angle zoom lens built for the DSLR camera system, with a full-frame image circle rating that makes it usable on both full-frame and APS-C bodies. Its focal length range spans 15mm to 30mm, covering everything from expansive ultra-wide perspectives to moderate wide-angle framing without switching lenses. The variable maximum aperture runs from f/3.5 at 15mm to f/4.5 at 30mm, providing reasonable light-gathering across the zoom range.
The lens supports both autofocus and manual focus, offering flexibility depending on your shooting style or subject. With availability across five mounts — Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA — it slots into a wide variety of existing DSLR systems. Weighing in at 600g, it has a solid, substantial build.
Note that image stabilization is not included, so handheld shooting in challenging light will require compensating techniques on the camera or support side.
Pros — Sigma 15-30mm f/3.5-4.5
- ✓Wide focal length range of 15mm to 30mm covers ultra-wide to moderate wide-angle in a single lens
- ✓Maximum aperture of f/3.5 at 15mm provides solid light gathering at the wide end
- ✓Full-frame rated, suitable for use on both full-frame and APS-C DSLR bodies
Cons — Sigma 15-30mm f/3.5-4.5
- ✗No image stabilization, which can be a drawback in low-light or handheld shooting situations
- ✗Variable maximum aperture (f/3.5–4.5) means light gathering diminishes as you zoom in
- ✗At 600g, the lens has a substantial weight that may add fatigue during extended handheld use