Sigma Contemporary 18-50mm f/2.8 DC DN 18-50mm
A constant f/2.8 aperture across the 18-50mm zoom range is packed into a weather-sealed body weighing just 290g, making it exceptionally portable for APS-C mirrorless systems. Its stepping motor delivers fast, quiet autofocus and the 4.8-inch minimum focus distance enables 1:2.8 magnification macro-style close-ups. This lens is best for travel photographers and hybrid shooters who need a lightweight, versatile standard zoom without sacrificing low-light capability.
概览
30秒速览
价格降了18%，但评分跌了14分。新对手太强，它现在主打便宜够用。
优缺点
优点
- 价格大幅下调后性价比突出 92nd
- 锐度表现依然可靠 88th
- 对焦安静迅速 87th
- 轻便小巧适合日常挂机 85th
缺点
- 长焦端画质偏软
- 塑料卡口耐用性存疑
- 光圈全开时暗角明显
- 竞品增多后优势被稀释
用户评价
用户评价
用户口碑如何随时间变化
独家依据客户实际撰写评价的时间--让你看到最初的好评是否持续。
基于 60 条带日期的客户评价，按日历季度分组。分期分析为英文。
实测数据
性能表现
规格参数
完整规格参数
Optics
| Type | Zoom |
| Focal Length Min | 18 |
| Focal Length Max | 50 |
| Elements | 13 |
| Groups | 10 |
| Aspherical Elements | 3 |
| ED Elements | 1 |
| Coating | Super Multi-Layer Coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/2.8 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Sony E |
| Format | APS-C |
| Weather Sealed | Yes |
| Weight | 0.3 kg / 0.6 lbs |
| Filter Thread | 55 |
AF & Stabilization
| AF Type | stepping motor |
| Stabilization | No |
Focus
| Min Focus Distance | 121 |
| Max Magnification | 1:2.8 |
竞品对比
放在当前市场里，Tamron 28-75mm f/2.8 G2在光圈和锐度上全面领先，Sigma 10-18mm f/2.8则用更广的视角和恒定光圈抢走了风光和视频用户。Panasonic Leica 12-60mm和Canon RF 28-70mm f/2.8 IS STM也分别在防抖和人像焦段上给出了更诱人的方案。这只镜头只能靠价格和重量来守位。
| Spec | Sigma Contemporary 18-50mm f/2.8 DC DN 18-50mm | Nikon NIKKOR Z 17-28mm f/2.8 | Tamron Di III 28-75mm f/2.8 VXD G2 | Panasonic Leica DG Vario-Elmarit H-ES12060 | Canon RF 28-70mm f/2.8 IS STM | Sony G SELP28135G.SYX |
|---|---|---|---|---|---|---|
| Focal Length | 18-50mm | 17-28mm | 28-75mm | 12-60mm | 28-70mm | 28-135mm |
| Max Aperture | f/22 | f/2.8 | f/2.8 | f/2.8 | f/22 | f/4 |
| Mount | Sony E | Nikon Z | Sony E | Micro Four Thirds | Canon RF | Sony E |
| Stabilization | false | false | false | true | true | true |
| Weather Sealed | true | true | true | true | true | true |
| Weight (g) | 290 | 450 | 540 | 320 | 495 | 420 |
| AF Type | stepping motor | Stepping Motor | VXD | linear motor | STM | SSM |
| Lens Type | zoom | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| 产品 | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | 用户口碑 | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Sigma Contemporary 18-50mm f/2.8 DC DN 18-50mm | 87 | 14.5 | 85.1 | 92.4 | 80.3 | 22.6 | 80.4 | 78.3 | 87.9 | 38 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87 | 88.1 | 73.6 | 86.3 | 87 | 85.8 | 90.8 | 68.1 | 64.6 | 38 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88.1 | 67.2 | 87.3 | 87.8 | 85.8 | 80.4 | 78.2 | 83.1 | 38 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88.1 | 83.1 | 50.4 | 90.2 | 85.8 | 44.2 | 93.1 | 63.5 | 83.2 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 87 | 25.9 | 70.2 | 80.4 | 85 | 22.6 | 98.1 | 77.2 | 87.9 | 98.5 |
| Sony G SELP28135G.SYX Compare | 94.2 | 80.2 | 75.5 | 31.2 | 87 | 69.9 | 63.3 | 92.4 | 50.2 | 92.8 |
价格
性价比分析
价格从原先的570到919美元区间大幅下调至468到13367美元，入门门槛降低了约18%。这让它在同级别中重新有了竞争力，尤其适合预算敏感的用户。不过高配版本的价格跨度极大，选购时需仔细核对具体型号和套装。
我们自 2026年5月30日 起追踪该产品的价格。数据增多后将显示图表。
了解更多
最终评价
降价之后它找回了些存在感，但整体评分从90滑到77，说明竞品进步更快。Tamron和Sigma的新镜头在光学素质和做工上压得很凶，这只镜头现在更像是一个够用且便宜的选择，而非当初那个让人惊喜的选手。
