Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
98 综合评分
vs
Viltrox Air AF 20mm F2.8 Air Z 20mm
Viltrox
55 综合评分
买家怎么说
Sigma Contemporary 18-50mm f/2.8 DC DN
88 满分 100 置信度高 91 条评价
Sigma 18-50mm f/2.8 DC DN Contemporary 被广泛称赞为 APS-C 无反相机的一款紧凑、轻便且锐利的标准变焦镜头。用户一致强调其出色的图像质量、快速的 f/2.8 光圈和实惠的价格是主要优势，使其成为套机镜头的热门升级选择。常见的批评包括缺乏光学防抖和遮光罩设计不佳，但总体情绪极为积极。
优点
- 出色的图像锐度
- 紧凑轻巧的设计
- 快速恒定的 f/2.8 光圈
- 物超所值
- 快速安静的自动对焦
缺点
- 无光学防抖
- 遮光罩设计不佳
- 无防尘防滴
- 塑料制造工艺
- 变焦环方向与富士相反
Image quality 25
Build quality 12
Value for money 18
Size and weight 20
Autofocus performance 10
Stabilization 8
Viltrox Air AF 20mm F2.8 Air Z 20mm
78 满分 100 置信度中 14 条评价
尼康Z卡口的Viltrox 27mm f/1.2镜头因其出色的图像质量、坚固的做工和极高的性价比而获得压倒性的好评。用户称赞其锐度、虚化和低光性能，尽管少数人报告了自动对焦问题或缺陷。总体而言，它被视为更昂贵的尼康镜头的绝佳替代品。
优点
- 出色的图像质量
- 坚固的做工
- 极高的性价比
- 快速响应的自动对焦
- 美丽的虚化和主体分离
缺点
- 偶尔自动对焦跟踪下降
- 报告有缺陷的单元（FEE错误）
- 固定光圈限制
- 不如尼康50mm 1.8 S锐利
- 用于天文摄影时柔和且对焦慢
Image quality 10
Build quality 6
Value for money 8
Autofocus performance 5
Low light performance 3
Defects and reliability 2
评分
Travel
Budget
Street
Professional
Macro
Portrait
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Viltrox Air AF 20mm F2.8 Air Z 20mm | |
|---|---|---|
| Optics | ||
| Type | zoom | wide-angle |
| Focal Length Min | 18 mm | 20 mm |
| Focal Length Max | 50 mm | 20 mm |
| Elements | 13 | 10 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 1 | 2★ |
| Coating | Super Multi-Layer Coating | high-definition nano multi-layer coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Nikon Z |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg | 0.16 kg★ |
| Filter Thread | 55 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM + Lead screw★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 190 mm |
| Max Magnification | 1:2.8★ | 0.17x |
优缺点
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 Air AF 20mm F2.8 Air Z 20mm
- Strong build (96th percentile)96th %ile
- Strong af (85th percentile)85th %ile
- Strong optical (70th percentile)
- Below average bokeh (30th percentile)
- Below average user sentiment (30th percentile)
- Below average versatility (34th percentile)
- Below average stabilization (35th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.172每美元得分
vs
Viltrox Air AF 20mm F2.8 Air Z 20mm0.364每美元得分
Viltrox Air AF 20mm F2.8 Air Z 20mm 性价比高 2.1 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 98 overall, wins 9 of 9 usage categories and 3 of 21 specs.
