Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Pentax DA 21880 18-55mm
Pentax
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
Pentax DA 21880 18-55mm
78 满分 100 置信度中 15 条评价
宾得DA 18-55mm f/3.5-5.6 AL WR变焦镜头因其耐候性、多功能性和良好的图像质量而受到称赞，尤其适合日间和低光室内摄影。用户欣赏其作为通用套机镜头的耐用性和性价比，尽管有人指出它在光学上只是一款套机镜头，在锐度和速度上有限制。提到了配送延迟，但归因于邮政服务，而非产品本身。
优点
- 耐候性设计
- 适用于人像和风景的多功能性
- 套机镜头中良好的图像质量
- 清晰的微距和广角拍摄
- 色彩鲜艳
缺点
- 光学上只是套机镜头
- 与更好的镜头相比锐度有限
- 光圈较慢 (f/3.5-5.6)
- 配送延迟 (邮政服务)
Weather resistance 3
Image quality 5
Versatility 4
Value for money 3
Build quality 3
Sharpness 2
评分
Travel
Macro
Street
Budget
Professional
Portrait
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Pentax DA 21880 18-55mm | |
|---|---|---|
| Optics | ||
| Type | zoom | zoom |
| Focal Length Min | 18 mm | 18 mm |
| Focal Length Max | 50 mm | 55 mm |
| Elements | 13 | 11 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | 0 |
| ED Elements | 1★ | — |
| Coating | Super Multi-Layer Coating | SP (Super Protect) coating |
| Aperture | ||
| Max Aperture | f/2.8 | 22-38★ |
| Min Aperture | f/2.8 | 3.5-5.6 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7★ | 6 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg | 0.23 kg★ |
| Filter Thread | 55 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | Autofocus |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 250 mm |
| Max Magnification | 1:2.8 | 1:2.94 |
优缺点
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong social proof (91st percentile)91st %ile
- Strong macro (89th percentile)89th %ile
- Strong aperture (88th percentile)88th %ile
- Strong bokeh (86th percentile)86th %ile
- Below average stabilization (34th percentile)
Pentax DA 21880 18-55mm
- Strong build (88th percentile)88th %ile
- Strong versatility (83rd percentile)83rd %ile
- Strong social proof (77th percentile)
- Strong macro (75th percentile)
- Below average bokeh (6th percentile)6th %ile
- Below average aperture (22nd percentile)
- Below average user sentiment (30th percentile)
- Below average stabilization (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.174每美元得分
vs
Pentax DA 21880 18-55mm0.315每美元得分
Pentax DA 21880 18-55mm 性价比高 1.8 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.
