Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
TTArtisan APS-C 7.5mm F2.0 8mm
TTArtisan
67 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
TTArtisan APS-C 7.5mm F2.0 8mm
72 满分 100 置信度中 21 条评价
TTArtisan 7.5mm f/2 鱼眼镜头（尼康Z卡口）收到褒贬不一的评价。用户称赞其锐度、坚固的做工和有趣的鱼眼效果，尤其适合创意摄影，如360度虚拟导览和滑板摄影。然而，存在重大问题：设计不佳的镜头盖容易脱落、部分机身的对焦刻度不准确，以及已停产的ND滤镜配件。该镜头最适合APS-C相机，全画幅用户会遇到暗角。
优点
- 图像锐利
- 做工扎实
- 有趣的鱼眼效果
- 性价比高
- 手动对焦轻松
缺点
- 镜头盖设计差易脱落
- 对焦刻度不准确
- 不再附带ND滤镜
- 全画幅相机上出现暗角
- 无标准滤镜螺纹
Build quality 6
Image sharpness 5
Lens cap design 4
Value for money 4
Focus accuracy 2
Nd filter availability 3
评分
Travel
Street
Budget
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | TTArtisan APS-C 7.5mm F2.0 8mm | |
|---|---|---|
| Optics | ||
| Type | zoom | fisheye |
| Focal Length Min | 18 mm | 8 mm |
| Focal Length Max | 50 mm | 8 mm |
| Elements | 13 | 11 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1 | 2★ |
| Coating | Super Multi-Layer Coating | multi-layer coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/2 |
| Min Aperture | f/2.8 | f/2 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Canon RF |
| Format | APS-C | APS-C |
| Weather Sealed | ✓★ | — |
| Weight | 0.29 kg★ | 0.37 kg |
| Filter Thread | 55 mm | 72 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | manual focus only |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 125 mm |
| Max Magnification | 1:2.8★ | — |
优缺点
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong macro (92nd percentile)92nd %ile
- Strong social proof (90th percentile)90th %ile
- Strong aperture (86th percentile)86th %ile
- Strong af (86th percentile)86th %ile
TTArtisan APS-C 7.5mm F2.0 8mm
- Strong aperture (92nd percentile)92nd %ile
- Strong macro (91st percentile)91st %ile
- Strong bokeh (91st percentile)91st %ile
- Strong stabilization (81st percentile)81st %ile
- Below average af (14th percentile)14th %ile
- Below average user sentiment (16th percentile)16th %ile
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.179每美元得分
vs
TTArtisan APS-C 7.5mm F2.0 8mm0.372每美元得分
TTArtisan APS-C 7.5mm F2.0 8mm 性价比高 2.1 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 99 overall, wins 9 of 9 usage categories and 7 of 21 specs.
