Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
7Artisans Lite Series 50mm f/1.8 AF 50mm
7Artisans
58 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
7Artisans Lite Series 50mm f/1.8 AF 50mm
72 满分 100 置信度中 20 条评价
7artisans 50mm f/1.8 镜头因其做工、锐度和性价比而获得普遍好评，尤其适合人像摄影。然而，多位用户报告自动对焦噪音大、控制环僵硬以及AF/MF开关存在问题，部分用户还指出在某些光圈下画质偏软。总体而言，这是一款性价比较高的入门级镜头，但存在一些妥协。
优点
- 性价比极高
- 做工精良
- 画质锐利
- 柔和的焦外虚化
- 轻巧便携
缺点
- 自动对焦噪音大
- 控制环僵硬
- AF/MF开关问题
- 某些光圈下画质偏软
- 所有光圈下都不锐利
Value for money 8
Build quality 6
Image sharpness 7
Autofocus performance 6
Bokeh quality 4
Control rings stiffness 4
评分
Travel
Budget
Street
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | 7Artisans Lite Series 50mm f/1.8 AF 50mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 50 mm |
| Focal Length Max | 50 mm | 50 mm |
| Elements | 13 | 11 |
| Groups | 10 | 9 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | multilayer coatings |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/1.8 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 11★ |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.29 kg★ | 0.42 kg |
| Filter Thread | 55 mm | 62 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 500 mm |
| Max Magnification | 1:2.8★ | — |
优缺点
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong macro (91st percentile)91st %ile
- Strong social proof (90th percentile)90th %ile
- Strong aperture (86th percentile)86th %ile
- Strong af (85th percentile)85th %ile
7Artisans Lite Series 50mm f/1.8 AF 50mm
- Strong social proof (90th percentile)90th %ile
- Strong af (85th percentile)85th %ile
- Strong optical (70th percentile)
- Below average user sentiment (16th percentile)16th %ile
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.008每美元得分
vs
7Artisans Lite Series 50mm f/1.8 AF 50mm0.013每美元得分
7Artisans Lite Series 50mm f/1.8 AF 50mm 性价比高 1.6 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 99 overall, wins 9 of 9 usage categories and 6 of 21 specs.
