Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
98 综合评分
vs
Yongnuo YN25mm F1.7M 25mm
Yongnuo
46 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 YN25mm F1.7M 25mm
65 满分 100 置信度低 9 条评价
这款适用于Micro Four Thirds系统的25mm f/1.7镜头因其快速自动对焦、出色的色彩和卓越的性价比而备受赞誉。然而，多位用户报告了连续拍摄时曝光不足、自动对焦故障以及连接松动可能导致镜头与相机机身断开的问题。虽然许多人认为它非常适合用作网络摄像头或日常摄影，但追求专业可靠性的人应考虑价格更高的替代品。
优点
- 快速准确的自动对焦
- 出色的色彩还原
- 卓越的性价比
- 轻巧紧凑的设计
- 金属卡口，经久耐用
缺点
- 连续拍摄时曝光不足
- 报告的自动对焦故障
- 连接松动导致断开
- 对焦环打滑
- 不适合专业用途
Autofocus performance 5
Image quality 4
Value for money 4
Build quality 4
Exposure issues 2
Connection 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 | Yongnuo YN25mm F1.7M 25mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 25 mm |
| Focal Length Max | 50 mm | 25 mm |
| Elements | 13 | 7 |
| Groups | 10 | 6 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | multi-layer coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/1.7 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Micro Four Thirds |
| Format | APS-C★ | micro-four-thirds |
| Weather Sealed | ✓★ | — |
| Weight | 0.29 kg | 0.15 kg★ |
| Filter Thread | 55 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM★ |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 200 mm |
| Max Magnification | 1:2.8★ | 0.2x |
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)
Yongnuo YN25mm F1.7M 25mm
- Strong build (90th percentile)90th %ile
- Strong af (85th percentile)85th %ile
- Strong stabilization (80th percentile)80th %ile
- Strong social proof (68th percentile)
- Below average user sentiment (8th percentile)8th %ile
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (22nd percentile)
- Below average versatility (34th percentile)
价格
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 98 overall, wins 9 of 9 usage categories and 6 of 21 specs.
