Sigma Contemporary 18-50mm f/2.8 DC DN
Yongnuo 85mm F1.8S DF DSM 85mm
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
Yongnuo 85mm F1.8S DF DSM 85mm
The Yongnuo 85mm f/1.8 Z-mount lens is widely praised for its sharpness, fast autofocus, and excellent value compared to the much pricier Nikon equivalent. Many users highlight its compact, lightweight metal build and pleasing bokeh, making it a great choice for portrait photography. However, some reviewers report significant flare, chromatic aberration, and vignetting, especially on full-frame cameras, and there have been compatibility issues with the Nikon Zf that were later addressed by a firmware update. A few users also note that the lens hood does not lock securely and that the focus ring can be accidentally moved too easily.
Pros
- Excellent sharpness for the price
- Fast and quiet autofocus
- Compact and lightweight metal build
- Pleasing bokeh
- Great value for money
Cons
- Significant flare and chromatic aberration
- Strong vignetting on full-frame cameras
- Lens hood does not lock securely
- Focus ring can be accidentally moved easily
- Compatibility issues with Nikon Zf (resolved by firmware update)
Scores
Specifications
| Sigma Contemporary 18-50mm f/2.8 DC DN | Yongnuo 85mm F1.8S DF DSM 85mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 85 mm |
| Focal Length Max | 50 mm | 85 mm |
| Elements | 13 | 9 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | nano-multilayer coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/1.8 |
| Min Aperture | f/2.8 | f/1.8 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg★ | 0.35 kg |
| Filter Thread | 55 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | DSM stepping motor |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 800 mm |
| Max Magnification | 1:2.8 | 1:7.7 |
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 (86th percentile)86th %ile
- Strong af (85th percentile)85th %ile
Yongnuo 85mm F1.8S DF DSM 85mm
- Strong aperture (94th percentile)94th %ile
- Strong bokeh (92nd percentile)92nd %ile
- Strong af (85th percentile)85th %ile
- Strong build (81st percentile)81st %ile
- Below average social proof (10th percentile)10th %ile
- Below average user sentiment (16th percentile)16th %ile
- Below average versatility (34th percentile)
Pricing
Sigma Contemporary 18-50mm f/2.8 DC DN
Yongnuo 85mm F1.8S DF DSM 85mm
No current pricing available
Verdict
Scores 98 overall, wins 7 of 9 usage categories and 4 of 21 specs.
