Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
98 综合评分
vs
Yongnuo 50F1.8S DF 50mm
Yongnuo
56 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
Yongnuo 50F1.8S DF 50mm
78 满分 100 置信度中 11 条评价
这款50mm f/1.8镜头被广泛认为是初学者和爱好者的超值选择。用户称赞其前景对焦清晰、背景虚化效果佳，非常适合人像和产品拍摄。虽然做工感觉廉价，自动对焦噪音大且速度慢，但大多数用户认为其光学性能远超其低廉的价格。有少数用户提到了耐用性问题以及与新型遮光罩不兼容的情况。
优点
- 超值性价比
- 前景对焦清晰
- 令人满意的虚化效果
- 人像拍摄出色
- 轻便紧凑
缺点
- 自动对焦噪音大
- 自动对焦速度慢
- 做工廉价
- 耐用性存疑
- 与新型遮光罩不兼容
Value for money 6
Bokeh and image quality 6
Autofocus speed 4
Autofocus noise 3
Build quality 4
Beginner friendly 5
评分
Travel
Budget
Street
Professional
Macro
Portrait
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Yongnuo 50F1.8S DF 50mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 50 mm |
| Focal Length Max | 50 mm | 50 mm |
| Elements | 13 | 10 |
| Groups | 10 | 6 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 1 | 2★ |
| Coating | Super Multi-Layer Coating | Nano-multilayer Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/1.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg | 0.27 kg★ |
| Filter Thread | 55 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | Digital stepping motor |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 450 mm |
| Max Magnification | 1:2.8★ | 0.13x |
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 (86th percentile)86th %ile
- Strong af (85th percentile)85th %ile
Yongnuo 50F1.8S DF 50mm
- Strong build (86th percentile)86th %ile
- Strong af (85th percentile)85th %ile
- Strong stabilization (80th percentile)80th %ile
- Below average social proof (25th percentile)
- Below average user sentiment (30th percentile)
- Below average macro (31st percentile)
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.172每美元得分
vs
Yongnuo 50F1.8S DF 50mm0.679每美元得分
Yongnuo 50F1.8S DF 50mm 性价比高 3.9 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.
