Sigma Contemporary 18-50mm f/2.8 DC DN
Viltrox Air AF 9mm f/2.8 Air 9mm
What Buyers Say
Sigma Contemporary 18-50mm f/2.8 DC DN
The Sigma 18-50mm f/2.8 DC DN Contemporary is widely praised as a compact, lightweight, and sharp standard zoom for APS-C mirrorless cameras. Users consistently highlight its excellent image quality, fast f/2.8 aperture, and affordable price as major strengths, making it a popular upgrade from kit lenses. Common criticisms include the lack of optical stabilization and a poorly designed lens hood, but overall sentiment is overwhelmingly positive.
Pros
- Excellent image sharpness
- Compact and lightweight design
- Fast f/2.8 constant aperture
- Great value for the price
- Fast and silent autofocus
Cons
- No optical image stabilization
- Poorly designed lens hood
- No weather sealing
- Plastic build quality
- Zoom ring direction opposite to Fujifilm
Viltrox Air AF 9mm f/2.8 Air 9mm
The Viltrox 23mm f/1.4 lens for Fuji X mount receives overwhelmingly positive feedback for its sharpness, fast and quiet autofocus, and excellent build quality at a budget price. A few users note the lack of an aperture ring and some corner softness, but most consider it a great value compared to the Fujifilm equivalent. One reviewer received a wrong hood, and another found it heavy and less sharp than the Viltrox 35mm Air lens.
Pros
- Excellent sharpness
- Fast and quiet autofocus
- Great build quality for the price
- Good value compared to Fujifilm
- Nice color rendering
Cons
- No aperture ring
- Slight corner softness
- Heavy for some users
- Received wrong hood
- Less sharp than Viltrox 35mm Air
Scores
Specifications
| Sigma Contemporary 18-50mm f/2.8 DC DN | Viltrox Air AF 9mm f/2.8 Air 9mm | |
|---|---|---|
| Optics | ||
| Type | zoom | wide-angle |
| Focal Length Min | 18 mm | 9 mm |
| Focal Length Max | 50 mm | 9 mm |
| Elements | 13 | 13 |
| Groups | 10 | 11 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 1 | 3★ |
| Coating | Super Multi-Layer Coating | Specialized Multi-Layer Coating Technology |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7★ | — |
| Build | ||
| Mount | Sony E | Fujifilm X |
| Format | APS-C | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg | 0.17 kg★ |
| Filter Thread | 55 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM + Lead screw focus motor★ |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 130 mm |
| Max Magnification | 1:2.8★ | 0.13 m |
Pros & Cons
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong macro (92nd percentile)92nd %ile
- Strong social proof (90th percentile)90th %ile
- Strong aperture (86th percentile)86th %ile
- Strong af (86th percentile)86th %ile
Viltrox Air AF 9mm f/2.8 Air 9mm
- Strong build (95th percentile)95th %ile
- Strong social proof (90th percentile)90th %ile
- Strong af (86th percentile)86th %ile
- Strong optical (84th percentile)84th %ile
- Below average bokeh (31st percentile)
- Below average versatility (34th percentile)
Pricing
Viltrox Air AF 9mm f/2.8 Air 9mm offers 1.7x better value for money
Verdict
Scores 99 overall, wins 8 of 9 usage categories and 4 of 21 specs.
