Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
98 综合评分
vs
Viltrox AF 40mm F2.5 40mm
Viltrox
52 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 AF 40mm F2.5 40mm
85 满分 100 置信度中 13 条评价
Viltrox AF 40mm f/2.5 镜头被广泛称赞为性价比极高的产品，以索尼镜头几分之一的价格提供了锐利的图像、良好的色彩还原和可靠的自动对焦。用户强调其轻巧紧凑的设计，非常适合旅行和日常使用。虽然有人指出它缺乏防风雨密封，最大光圈为 f/2.5 而非 f/2，但大多数人认为其光学质量和性能远超这个价位的预期。少数人提到需要后期处理，但总体评价非常积极。
优点
- 性价比极高
- 图像锐利
- 轻巧紧凑
- 自动对焦性能良好
- 色彩还原令人愉悦
缺点
- 无防风雨密封
- 最大光圈 f/2.5（非 f/2）
- 塑料机身（卡口除外）
- 可能需要后期处理
- 手动对焦非线性
Value for money 8
Image quality 7
Build quality 5
Autofocus performance 5
Size and weight 6
Weather sealing 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 AF 40mm F2.5 40mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 40 mm |
| Focal Length Max | 50 mm | 40 mm |
| Elements | 13 | 10 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | high-definition nano multi-layer coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/40 |
| Min Aperture | f/2.8 | f/2.5 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.29 kg | 0.17 kg★ |
| Filter Thread | 55 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 340 mm |
| Max Magnification | 1:2.8★ | 0.34m-∞ |
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 AF 40mm F2.5 40mm
- Strong build (88th percentile)88th %ile
- Strong af (85th percentile)85th %ile
- Strong social proof (82nd percentile)82nd %ile
- Below average bokeh (2nd percentile)2nd %ile
- Below average aperture (2nd percentile)2nd %ile
- Below average versatility (34th percentile)
- Below average stabilization (35th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN
Viltrox AF 40mm F2.5 40mm
No current pricing available
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 98 overall, wins 9 of 9 usage categories and 5 of 21 specs.
