Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Rokinon Series II 85mm f/1.4 85mm
Rokinon
65 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
Rokinon Series II 85mm f/1.4 85mm
84 满分 100 置信度中 15 条评价
Rokinon 85mm f/1.4手动镜头为天文摄影和人像摄影提供了卓越的性价比，以自动对焦镜头几分之一的价格实现清晰图像和柔美虚化。用户称赞其全开光圈时的中心锐度，以及收缩至f/2.8时的出色表现，尤其适合拍摄星空。然而，完全手动的对焦和光圈操作可能稍显繁琐，并存在做工不一致的问题，如遮光罩缺失或光圈环意外误触。总体而言，这是一款强烈推荐给习惯手动操作用户的预算镜头。
优点
- 全开光圈中心锐度
- 柔美虚化
- 非常适合天文摄影
- 性价比高
- 做工扎实
缺点
- 手动光圈环操作不便
- 部分包装缺少遮光罩
- 无自动对焦
- 使用转接环时头重脚轻
- 光圈环易误触
Sharpness 5
Bokeh 2
Build quality 4
Value for money 6
Manual operation 5
Astrophotography performance 3
评分
Travel
Budget
Street
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Rokinon Series II 85mm f/1.4 85mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 85 mm |
| Focal Length Max | 50 mm | 85 mm |
| Elements | 13 | 9 |
| Groups | 10 | 7 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | Ultra Multi-Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/1.4 |
| Min Aperture | f/2.8 | f/1.4 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Sony E | Canon EF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg★ | 0.54 kg |
| Filter Thread | 55 mm | 72 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | manual focus only |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 1.00 m |
| Max Magnification | 1:2.8 | 1:9 |
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 (87th percentile)87th %ile
- Strong af (85th percentile)85th %ile
Rokinon Series II 85mm f/1.4 85mm
- Strong bokeh (97th percentile)97th %ile
- Strong aperture (97th percentile)97th %ile
- Strong social proof (76th percentile)
- Strong build (68th percentile)
- Below average af (14th percentile)14th %ile
- Below average versatility (34th percentile)
价格
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.
