Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Sirui 56AS12E-W
Sirui
64 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
Sirui 56AS12E-W
85 满分 100 置信度低 5 条评价
这款镜头因其性价比和画质而受到称赞，尤其适合人像和采访拍摄。用户喜欢它的虚化效果、色彩还原以及f/2.2下的梦幻外观，尽管自动对焦比其他一些镜头慢，并且在视频模式下有一个小的重置问题。它是一款APS-C镜头，因此全画幅用户需要使用Super 35模式。
优点
- 价格实惠
- 出色的虚化效果
- 良好的自动对焦
- 美丽的色彩还原
- f/2.2下的梦幻外观
缺点
- 自动对焦比75mm慢
- 视频模式重置问题
- 仅APS-C，非全画幅
Value for money 3
Image quality 3
Autofocus performance 3
Build quality 2
Video mode issues 1
Compatibility 1
评分
Travel
Budget
Street
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Sirui 56AS12E-W | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 56 mm |
| Focal Length Max | 50 mm | 56 mm |
| Elements | 13 | 12 |
| Groups | 10 | 11 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | HD Nano coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/1.2 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 11★ |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | APS-C |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.29 kg★ | 0.42 kg |
| Filter Thread | 55 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 600 mm |
| Max Magnification | 1:2.8★ | — |
优缺点
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong macro (92nd percentile)92nd %ile
- Strong social proof (90th percentile)90th %ile
- Strong aperture (86th percentile)86th %ile
- Strong af (86th percentile)86th %ile
Sirui 56AS12E-W
- Strong af (86th percentile)86th %ile
- Strong social proof (81st percentile)81st %ile
- Strong optical (75th percentile)
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.179每美元得分
vs
Sirui 56AS12E-W0.221每美元得分
Sirui 56AS12E-W 性价比高 1.2 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 99 overall, wins 9 of 9 usage categories and 5 of 21 specs.
