Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
99 综合评分
vs
Tamron Di III 28-75mm f/2.8 Di III VXD G2
Tamron
91 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
Tamron Di III 28-75mm f/2.8 Di III VXD G2
88 满分 100 置信度中 20 条评价
腾龙28-75mm f/2.8镜头因其锐度、快速自动对焦和轻巧设计而备受赞誉，是索尼GM镜头的多功能且价格合理的替代品。用户欣赏其在人像和低光下的表现，尽管有些人指出塑料结构和缺乏防风雨密封是缺点。总体而言，它被认为是爱好者和专业人士的绝佳性价比选择。
优点
- 图像锐利
- 快速准确的自动对焦
- 轻巧设计
- 多功能焦距范围
- 性价比高
缺点
- 塑料制造质量
- 无防风雨密封
- 变焦环与对焦环方向相反
- 略长，不适合隐蔽使用
- 颜色比GM镜头略暗淡
Image quality 12
Autofocus performance 10
Build quality 8
Value for money 7
Weight and portability 6
Low light performance 5
评分
Travel
Budget
Street
Professional
Portrait
Macro
Video Cinema
Landscape
Wildlife Sports
规格
| Sigma Contemporary 18-50mm f/2.8 DC DN | Tamron Di III 28-75mm f/2.8 Di III VXD G2 | |
|---|---|---|
| Optics | ||
| Type | zoom | zoom |
| Focal Length Min | 18 mm | 28 mm |
| Focal Length Max | 50 mm | 75 mm |
| Elements | 13 | 17 |
| Groups | 10 | 15 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 1 | 2★ |
| Coating | Super Multi-Layer Coating | Fluorine Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/2.8 |
| Min Aperture | f/2.8 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Sony E | Sony E |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.29 kg★ | 0.54 kg |
| Filter Thread | 55 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | VXD |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 180 mm |
| Max Magnification | 1:2.8 | 1:2.7 |
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
Tamron Di III 28-75mm f/2.8 Di III VXD G2
- Strong bokeh (89th percentile)89th %ile
- Strong optical (88th percentile)88th %ile
- Strong macro (87th percentile)87th %ile
- Strong aperture (86th percentile)86th %ile
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.
