Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Pentax Limited 21410 21mm
Pentax
49 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 Limited 21410 21mm
85 满分 100 置信度中 10 条评价
宾得HD DA 21mm f/3.2 AL Limited镜头因其紧凑的尺寸、出色的色彩还原和锐度而获得压倒性的好评。用户称赞它是APS-C相机的多功能挂机镜头，做工扎实且对焦迅速。少数人提到全开光圈时边缘略软，以及风景拍摄视角有限，但总体而言，其画质和性价比备受推崇。
优点
- 紧凑轻巧的设计
- 出色的色彩还原
- 锐利的画质
- 快速安静的自动对焦
- 扎实的做工
缺点
- 全开光圈时边缘略软
- 风景拍摄视角有限
- 不适合广角风景拍摄
Image quality 5
Color rendering 3
Build quality 4
Size and portability 4
Value for money 3
Autofocus performance 2
评分
Travel
Budget
Street
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Pentax Limited 21410 21mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 21 mm |
| Focal Length Max | 50 mm | 21 mm |
| Elements | 13 | 8 |
| Groups | 10 | 5 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1★ | — |
| Coating | Super Multi-Layer Coating | HD coating, SP Protect coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/3.2 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✓★ | — |
| Weight | 0.29 kg | 0.12 kg★ |
| Filter Thread | 55 mm | 49 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | Autofocus |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 201 mm |
| Max Magnification | 1:2.8 | 1:5.9 |
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 (86th percentile)86th %ile
- Strong af (85th percentile)85th %ile
Pentax Limited 21410 21mm
- Strong build (95th percentile)95th %ile
- Strong macro (81st percentile)81st %ile
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (21st percentile)
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.174每美元得分
vs
Pentax Limited 21410 21mm0.109每美元得分
Sigma Contemporary 18-50mm f/2.8 DC DN 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 5 of 21 specs.
