Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
90 综合评分
vs
Sirui Saturn RF50B-A 50mm
Sirui
53 综合评分
评分
Street
Professional
Travel
Macro
Budget
Video Cinema
Portrait
Wildlife Sports
Landscape
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Sirui Saturn RF50B-A 50mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 50 mm |
| Focal Length Max | 50 mm | 50 mm |
| Elements | 13 | 17 |
| Groups | 10 | 12 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1★ | — |
| Coating | Super Multi-Layer Coating | — |
| Aperture | ||
| Max Aperture | f/2.8 | T16 |
| Min Aperture | f/2.8 | T2.9 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 10★ |
| Build | ||
| Mount | Sony E | Canon RF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓★ | — |
| Weight | 0.29 kg★ | 0.47 kg |
| Filter Thread | 55 mm | 62 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | Manual Focus |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 122 mm★ | 900 mm |
| Max Magnification | 1:2.8 | 1:16.2 |
优缺点
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong macro (91st percentile)91st %ile
- Strong af (87th percentile)87th %ile
- Strong build (86th percentile)86th %ile
- Strong aperture (83rd percentile)83rd %ile
- Below average social proof (21st percentile)
Sirui Saturn RF50B-A 50mm
- Strong stabilization (82nd percentile)82nd %ile
- Strong user sentiment (81st percentile)81st %ile
- Strong optical (69th percentile)
- Below average af (13th percentile)13th %ile
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.163每美元得分
vs
Sirui Saturn RF50B-A 50mm0.097每美元得分
Sigma Contemporary 18-50mm f/2.8 DC DN 性价比高 1.7 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 90 overall, wins 9 of 9 usage categories and 6 of 21 specs.
