Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Canon RF-S 3.9mm f/3.5 STM Dual Fisheye 4mm
Canon
47 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
Canon RF-S 3.9mm f/3.5 STM Dual Fisheye 4mm
45 满分 100 置信度中 11 条评价
佳能RF-S 3.9mm f/3.5 STM双鱼眼镜头收到褒贬不一的评价。一位已验证用户报告了一个严重的自动对焦错误，需要重置相机才能修复，并且与佳能VR Utility不兼容。另一位已验证用户认为它是R5系统的一个价格实惠、轻便且带自动对焦的替代品。第三位未验证用户称赞其用于VR视频，称其为婚礼摄像的10/10购买。
优点
- R5设置的经济实惠替代品
- 轻量化设计
- 自动对焦功能
- 非常适合VR视频
- 适合婚礼摄像
缺点
- 频繁丢失自动对焦，需要重置相机
- 与佳能VR Utility不兼容
- 兼容性有限（仅确认R7）
- 没有旋入式ND滤镜选项
- 仅对左镜头主体自动对焦
Autofocus reliability 3
Compatibility 3
Value for money 2
Vr video quality 2
Build quality 1
Filter options 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 | Canon RF-S 3.9mm f/3.5 STM Dual Fisheye 4mm | |
|---|---|---|
| Optics | ||
| Type | zoom | fisheye |
| Focal Length Min | 18 mm | 4 mm |
| Focal Length Max | 50 mm | 4 mm |
| Elements | 13 | 11 |
| Groups | 10 | 8 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1 | 2★ |
| Coating | Super Multi-Layer Coating | Air Sphere Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/3.5 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Sony E | Canon RF |
| Format | APS-C | APS-C |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.29 kg | 0.29 kg |
| Filter Thread | 55 mm | 31 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 201 mm |
| Max Magnification | 1:2.8 | 1:33.33 |
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 build (85th percentile)85th %ile
Canon RF-S 3.9mm f/3.5 STM Dual Fisheye 4mm
- Strong af (85th percentile)85th %ile
- Strong macro (81st percentile)81st %ile
- Strong build (76th percentile)
- Below average user sentiment (2nd percentile)2nd %ile
- Below average social proof (26th percentile)
- Below average bokeh (30th percentile)
- Below average versatility (34th percentile)
价格
Sigma Contemporary 18-50mm f/2.8 DC DN0.008每美元得分
vs
Canon RF-S 3.9mm f/3.5 STM Dual Fisheye 4mm0.002每美元得分
Sigma Contemporary 18-50mm f/2.8 DC DN 性价比高 4.0 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.
