Sigma Contemporary 18-50mm f/2.8 DC DN
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 89th
- 对焦安静迅速 87th
- 轻便小巧适合日常挂机 86th
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 | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Nikon NIKKOR Z 17-28mm f/2.8 | Sony G SELP28135G.SYX | Panasonic LUMIX S S-R2060 | Altura Photo NIKKOR YZ0308 |
|---|---|---|---|---|---|---|
| Focal Length | 18-50mm | 17-70mm | 17-28mm | 28-135mm | 20-60mm | - |
| Max Aperture | f/22 | f/2.8 | f/2.8 | f/4 | f/3.5 | f/3.5 |
| Mount | Sony E | Fujifilm X | Nikon Z | Sony E | L-Mount | Screw-on lens fits camera lenses with a 55mm front filter thread |
| Stabilization | false | true | false | true | false | true |
| Weather Sealed | true | true | true | true | true | false |
| Weight (g) | 290 | 544 | 450 | 420 | 350 | 320 |
| AF Type | stepping motor | RXD | Stepping Motor | SSM | stepping motor | STM |
| Lens Type | zoom | zoom | zoom | zoom | zoom | wide-angle |
| 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 | 87.4 | 13.8 | 86.4 | 91.9 | 81.9 | 21 | 80.5 | 78 | 89.3 | 37.8 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.7 | 87.4 | 69.6 | 85.9 | 91 | 84.6 | 63.5 | 89.3 | 85.1 | 83.4 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.4 | 87.4 | 75.9 | 85.9 | 88 | 84.6 | 90.8 | 67.3 | 68.8 | 37.8 |
| Sony G SELP28135G.SYX Compare | 94.4 | 78.4 | 77.7 | 34.1 | 88 | 67.1 | 63.5 | 92.4 | 55.7 | 93.4 |
| Panasonic LUMIX S S-R2060 Compare | 87.4 | 85.5 | 82.5 | 66.9 | 78.4 | 77.9 | 0 | 81.4 | 69 | 37.8 |
| Altura Photo NIKKOR YZ0308 Compare | 87.4 | 75.9 | 73.5 | 96.2 | 45.2 | 77.9 | 0 | 33.3 | 71.5 | 83.4 |
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。
Amazon.com.mx 1 个报价 最低 MX$13,367
Price History
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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。
