Sigma EX DC HSM 4.5mm f/2.8 5mm
The fast f/2.8 aperture and 180-degree circular projection on APS-C sensors make this a specialized tool for low-light scenarios like astrophotography. Its equisolid angle projection method provides quantifiable data for scientific use, while the HSM motor enables quiet autofocus with full-time manual override. This lens is best for aurora photographers and researchers needing precise solid angle measurements of sky or vegetation distribution.
Focal length 4mm
Aperture f/2.8
Mount Nikon F
Weight 472 g
af type HSM
lens type fisheye
46 综合评分
价格 £0
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概览
优缺点
优点
- Strong macro (91st percentile) 91st
- Strong aperture (84th percentile) 84th
- Strong bokeh (82nd percentile) 82nd
缺点
- Below average user sentiment (7th percentile)
- Below average versatility (33rd percentile)
用户评价
用户口碑如何随时间变化
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用户口碑随时间不断改善
65/100我们的 AI 口碑分析
基于 13 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 | Fisheye |
| Focal Length Min | 4 |
| Focal Length Max | 4 |
| Coating | Super Multi-Layer Coating |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/2.8 |
| Constant | Yes |
Build
| Mount | Nikon F |
| Format | APS-C |
| Weight | 0.5 kg / 1.0 lbs |
AF & Stabilization
| AF Type | HSM |
| Stabilization | No |
Focus
| Min Focus Distance | 135 |
| Max Magnification | 1:6 |
竞品对比
| Spec | Sigma EX DC HSM 4.5mm f/2.8 5mm | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12060 | Canon RF 28-70mm f/2.8 IS STM | Sony G SELP28135G.SYX |
|---|---|---|---|---|---|---|
| Focal Length | 4mm | 17-70mm | 17-28mm | 12-60mm | 28-70mm | 28-135mm |
| Max Aperture | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/22 | f/4 |
| Mount | Nikon F | Fujifilm X | Nikon Z | Micro Four Thirds | Canon RF | Sony E |
| Stabilization | false | true | false | true | true | true |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 472 | 544 | 450 | 320 | 495 | 420 |
| AF Type | HSM | RXD | Stepping Motor | linear motor | STM | SSM |
| Lens Type | fisheye | 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 EX DC HSM 4.5mm f/2.8 5mm | 53.7 | 81.9 | 43.5 | 90.8 | 45.1 | 84.3 | 7.2 | 33.3 | 60.2 | 37.7 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.7 | 87.1 | 69.8 | 85.8 | 91 | 84.3 | 63.5 | 89.3 | 85.4 | 83.3 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.4 | 87.1 | 76.1 | 85.8 | 88 | 84.3 | 90.8 | 67.3 | 69.6 | 37.7 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98.1 | 87.1 | 84.6 | 51.7 | 91 | 84.3 | 44.3 | 93.1 | 68.6 | 83.3 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 87.4 | 24 | 72.9 | 80 | 86.2 | 21 | 98 | 76.8 | 89.4 | 98.6 |
| Sony G SELP28135G.SYX Compare | 94.4 | 78.1 | 77.9 | 34 | 88 | 66.7 | 63.5 | 92.3 | 56.6 | 93.4 |
使用场景评分
完整评测即将发布。上方的规格、评分、价格和图表始终保持最新。
