Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Viltrox AF 28mm F4.5 28mm
Viltrox
55 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 28mm F4.5 28mm
72 满分 100 置信度中 20 条评价
Viltrox AF 28mm f/4.5 饼干镜头因其超紧凑的尺寸、轻巧的设计和出色的性价比而广受好评，成为街头摄影和旅行的最爱。用户指出，它将全画幅相机变成了一个非常便携的设置，尽管固定光圈 f/4.5 和缺乏手动对焦环对某些人来说是限制。图像质量被认为物有所值，但弱光性能和暗光下的自动对焦是常见的缺点。少数用户报告了后镜头盖卡住或某些索尼型号电池耗尽的问题，但总体情绪对其预期的休闲用途是积极的。
优点
- 超紧凑轻巧的设计
- 出色的性价比
- 适合街头摄影和旅行
- 同类产品中图像清晰
- 内置镜头盖
缺点
- 固定光圈 f/4.5
- 无手动对焦环
- 弱光自动对焦差
- 索尼 A5100 电池耗尽
- 后镜头盖卡住问题
Portability 12
Value for money 10
Image quality 8
Fixed aperture 5
Autofocus performance 5
Low light performance 4
评分
Travel
Budget
Street
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Viltrox AF 28mm F4.5 28mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 28 mm |
| Focal Length Max | 50 mm | 28 mm |
| Elements | 13 | 6 |
| Groups | 10 | 6 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 1 | 2★ |
| Coating | Super Multi-Layer Coating | nano multi-coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/28 |
| Min Aperture | f/2.8 | f/4.5 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7★ | 6 |
| Build | ||
| Mount | Sony E | Fujifilm X |
| Format | APS-C | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg | 0.06 kg★ |
| Filter Thread | 55 mm | — |
| AF & Stabilization | ||
| AF Type | stepping motor★ | VCM Voice Coil Autofocus Motor |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 340 mm |
| Max Magnification | 1:2.8 | 1:10 |
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
Viltrox AF 28mm F4.5 28mm
- Strong build (100th percentile)100th %ile
- Strong af (95th percentile)95th %ile
- Strong stabilization (80th percentile)80th %ile
- Strong macro (66th percentile)
- Below average bokeh (3rd percentile)3rd %ile
- Below average aperture (8th percentile)8th %ile
- Below average user sentiment (16th percentile)16th %ile
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.008每美元得分
vs
Viltrox AF 28mm F4.5 28mm0.031每美元得分
Viltrox AF 28mm F4.5 28mm 性价比高 3.9 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.
