Sigma Contemporary 18-50mm f/2.8 DC DN
Viltrox AF 40mm F2.5 40mm
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 AF 40mm F2.5 40mm
The Viltrox AF 40mm f/2.5 lens is widely praised as an exceptional value, delivering sharp images, good color rendition, and solid autofocus at a fraction of the cost of Sony alternatives. Users highlight its lightweight, compact design, making it ideal for travel and everyday carry. While some note it lacks weather sealing and the maximum aperture is f/2.5 rather than f/2, most find the optical quality and performance far exceed expectations for the price. A few mention it may require some post-processing, but overall sentiment is overwhelmingly positive.
Pros
- Excellent value for money
- Sharp image quality
- Lightweight and compact
- Good autofocus performance
- Pleasant color rendition
Cons
- No weather sealing
- Maximum aperture f/2.5 (not f/2)
- Plastic build (except mount)
- May require post-processing
- Manual focus not linear
Scores
Specifications
| Sigma Contemporary 18-50mm f/2.8 DC DN | Viltrox AF 40mm F2.5 40mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 40 mm |
| Focal Length Max | 50 mm | 40 mm |
| Elements | 13 | 10 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | high-definition nano multi-layer coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/40 |
| Min Aperture | f/2.8 | f/2.5 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.29 kg | 0.17 kg★ |
| Filter Thread | 55 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 340 mm |
| Max Magnification | 1:2.8★ | 0.34m-∞ |
Pros & Cons
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong social proof (91st percentile)91st %ile
- Strong macro (90th percentile)90th %ile
- Strong aperture (85th percentile)85th %ile
- Strong af (85th percentile)85th %ile
- Below average stabilization (35th percentile)
Viltrox AF 40mm F2.5 40mm
- Strong build (88th percentile)88th %ile
- Strong af (85th percentile)85th %ile
- Strong social proof (82nd percentile)82nd %ile
- Below average bokeh (2nd percentile)2nd %ile
- Below average aperture (2nd percentile)2nd %ile
- Below average versatility (34th percentile)
- Below average stabilization (35th percentile)
Pricing
Viltrox AF 40mm F2.5 40mm offers 2.2x better value for money
Verdict
Scores 98 overall, wins 9 of 9 usage categories and 5 of 21 specs.
