Canon RF45mm F1.2 STM 45mm
Canon
57 综合评分
vs
Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
78 综合评分
买家怎么说
Canon RF45mm F1.2 STM 45mm
72 满分 100 置信度中 29 条评价
这款45mm f/1.2镜头因其出色的性价比而备受赞誉，以实惠的价格提供了快速光圈和良好的图像质量。用户强调其锐度、轻巧设计以及创造美丽背景虚化的能力。然而，一些人注意到在f/2-2.8时有明显的焦点偏移，全开光圈时柔和且对比度下降，以及校正前强烈的暗角。它被认为是爱好者的绝佳创意工具，但可能无法满足专业工作或视频拍摄的需求。
优点
- 出色的性价比
- 快速f/1.2光圈
- 锐利的图像质量
- 轻巧紧凑
- 美丽的背景虚化
缺点
- f/2-2.8时的焦点偏移
- f/1.2时柔和且对比度下降
- 校正前强烈的暗角
- 不适合视频自动对焦
- 无图像稳定功能
Value for money 8
Image quality wide open 7
Focus shift 3
Vignetting 3
Autofocus performance 4
Build and weight 5
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
评分
Travel
Macro
Budget
Landscape
Professional
Street
Wildlife Sports
Video Cinema
Portrait
规格
| Canon RF45mm F1.2 STM 45mm | Sigma Contemporary 18-50mm f/2.8 DC DN | |
|---|---|---|
| Optics | ||
| Type | prime | zoom |
| Focal Length Min | 45 mm | 18 mm |
| Focal Length Max | 45 mm | 50 mm |
| Elements | 9 | 13 |
| Groups | 7 | 10 |
| Aspherical Elements | 1 | 3★ |
| ED Elements | — | 1★ |
| Coating | SSC (Super Spectra Coating) | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/16 | f/22 |
| Min Aperture | f/1.2 | f/2.8 |
| Constant | ✗ | ✓★ |
| Diaphragm Blades | 9★ | 7 |
| Build | ||
| Mount | Canon RF | Sony E |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.35 kg | 0.29 kg★ |
| Filter Thread | 67 mm | 55 mm |
| AF & Stabilization | ||
| AF Type | STM★ | stepping motor |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 450 mm | 121 mm★ |
| Max Magnification | 1:7.7 | 1:2.8 |
优缺点
Canon RF45mm F1.2 STM 45mm
- Strong social proof (86th percentile)86th %ile
- Strong af (84th percentile)84th %ile
- Strong build (80th percentile)80th %ile
- Below average user sentiment (16th percentile)16th %ile
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong social proof (91st percentile)91st %ile
- Strong macro (89th percentile)89th %ile
- Strong af (84th percentile)84th %ile
- Strong build (84th percentile)84th %ile
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (22nd percentile)
- Below average stabilization (34th percentile)
价格
Canon RF45mm F1.2 STM 45mm0.128每美元得分
vs
Sigma Contemporary 18-50mm f/2.8 DC DN0.175每美元得分
Sigma Contemporary 18-50mm f/2.8 DC DN 性价比高 1.4 倍
结论
胜出: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 78 overall, wins 8 of 9 usage categories and 5 of 21 specs.
