Sigma Sigma Contemporary Sigma 10-18mm f/2.8 DC DN Contemporary Lens (Sony Review
The Sigma 10-18mm f/2.8 is a fantastically light ultra-wide zoom, but its autofocus is just average. It's a great pick for travelers who need a fast, wide field of view.
Overview
So you're looking at the Sigma 10-18mm f/2.8 DC DN for your Sony APS-C camera. This is an ultra-wide zoom that's super light and compact, weighing just 255 grams. It gives you a full-frame equivalent of 15-27mm, which is perfect for landscapes, tight interiors, or creative street shots where you want to fit a lot in the frame.
It's not a weather-sealed lens, and it doesn't have stabilization, so keep that in mind. But for the size and that constant f/2.8 aperture, it's a really interesting option if you need a wide angle that doesn't weigh you down.
Performance
Optical performance is solid, landing in the 78th percentile. That means sharpness is generally good, especially for the price. The f/2.8 aperture is decently fast for an ultra-wide, helping in lower light. But the autofocus is just average, sitting at the 48th percentile. It's not slow, but it's not the snappiest for fast action. The lack of stabilization means you'll need steady hands or a higher ISO in dim situations.
Pros & Cons
Pros
- Strong build (88th percentile) 89th
- Strong macro (86th percentile) 83th
- Strong optical (78th percentile) 83th
Cons
Specifications
Full Specifications
Optics
| Type | Zoom |
| Focal Length Min | 10 |
| Focal Length Max | 18 |
| Elements | 13 |
| Groups | 10 |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/22 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Sony E |
| Format | APS-C |
| Weight | 0.3 kg / 0.6 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 117 |
| Max Magnification | 1:4 |
Value & Pricing
At $679, it's not cheap, but it's also not the most expensive ultra-wide option. You're paying for that compact design and constant f/2.8 in a zoom. If you absolutely need a tiny, fast wide-angle for travel or hiking, the value is there. If you can live with a slower, variable aperture lens, you could save a lot of money.
Price History
vs Competition
Stack it up against the Sony 15mm f/1.4 G, and it's a different beast. The Sony is a prime, sharper, faster, and has better AF, but it's also heavier and more expensive. The Viltrox 35mm f/1.7 is a budget portrait lens, not a wide-angle, so that's not a direct fight. For a zoom alternative, the Panasonic 14-140mm is a superzoom with way more reach but a much slower variable aperture. The Sigma wins on being a dedicated, fast ultra-wide zoom in a tiny package.
| Spec | Sigma Sigma Contemporary Sigma 10-18mm f/2.8 DC DN Contemporary Lens (Sony | Meike Meike 55mm F1.8 Pro Full Frame AF STM Lens High | Viltrox VILTROX 35mm F1.7 Lens, X Mount 35mm F1.7 Auto | Nikon Nikon S-Line Nikon NIKKOR Z 35mm f/1.8 S Lens | Panasonic Panasonic LUMIX G Vario 14-140mm f/3.5-5.6 II | Fujifilm VILTROX 25mm F1.7 f/1.7 AF Lens for Fuji X Mount, |
|---|---|---|---|---|---|---|
| Focal Length | 10-18mm | 55mm | 35mm | 35mm | 14-140mm | 25mm |
| Max Aperture | f/2.8 | f/1.8 | f/1.7 | f/1.8 | f/3.5 | f/1.7 |
| Mount | Sony E | Sony E | Fujifilm X | Nikon Z | Micro Four Thirds | Fujifilm X |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | false | false | false | false | false |
| Weight (g) | 255 | 201 | 301 | 371 | 27 | 400 |
| AF Type | Autofocus | STM | STM | STM | — | STM |
| Lens Type | Zoom | — | — | Zoom | Telephoto | — |
Verdict
Buy this if you're a Sony APS-C shooter who needs a lightweight, capable ultra-wide zoom for landscapes, architecture, or travel vlogging. The constant f/2.8 is a real benefit. Skip it if you need top-tier autofocus for sports, require weather sealing, or are on a tight budget. It's a specialist lens that does its job well.