Pentax HD Pentax-D FA 50mm f/1.4 50mm
Pentax
44 综合评分
vs
Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
买家怎么说
Pentax HD Pentax-D FA 50mm f/1.4 50mm
暂无用户反馈
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
评分
Travel
Macro
Street
Budget
Professional
Portrait
Video Cinema
Landscape
Wildlife Sports
规格
| Pentax HD Pentax-D FA 50mm f/1.4 50mm | Sigma Contemporary 18-50mm f/2.8 DC DN | |
|---|---|---|
| Optics | ||
| Type | prime | zoom |
| Focal Length Min | 50 mm | 18 mm |
| Focal Length Max | 50 mm | 50 mm |
| Elements | 7 | 13 |
| Groups | 6 | 10 |
| Aspherical Elements | 1 | 3★ |
| ED Elements | 1 | 1 |
| Coating | Multilayer HD Coating | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/22 | f/2.8 |
| Min Aperture | f/1.4 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 8★ | 7 |
| Build | ||
| Mount | Pentax K | Sony E |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.91 kg | 0.29 kg★ |
| Filter Thread | 49 mm | 55 mm |
| AF & Stabilization | ||
| AF Type | Autofocus | stepping motor★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 450 mm | 121 mm★ |
| Max Magnification | 1:6.67 | 1:2.8 |
优缺点
Pentax HD Pentax-D FA 50mm f/1.4 50mm
- Strong social proof (86th percentile)86th %ile
- Below average bokeh (19th percentile)19th %ile
- Below average aperture (22nd percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
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)
价格
Pentax HD Pentax-D FA 50mm f/1.4 50mm0.128每美元得分
vs
Sigma Contemporary 18-50mm f/2.8 DC DN0.174每美元得分
Sigma Contemporary 18-50mm f/2.8 DC DN 性价比高 1.4 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 99 overall, wins 9 of 9 usage categories and 4 of 21 specs.
