Pentax HD PENTAX-FA 50mm f/1.4 50mm
Pentax
49 综合评分
vs
Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD
Tamron
100 综合评分
买家怎么说
Pentax HD PENTAX-FA 50mm f/1.4 50mm
88 满分 100 置信度中 28 条评价
HD FA 50mm f/1.4 镜头因其卓越的锐度、美丽的色彩还原和柔和的散景而广受赞誉。用户欣赏其快速安静的自动对焦、坚固的做工以及与胶片和数码宾得机身的兼容性。有人提到在旧相机上需要更新固件以及偶尔的后焦问题，但总体而言，它被认为是一流的定焦镜头。
优点
- 卓越锐度
- 美丽色彩还原
- 柔和散景
- 快速安静自动对焦
- 坚固做工
缺点
- 旧相机需要固件更新
- 偶尔后焦问题
- 最大光圈时轻微洋红色偏
- 比其他镜头重
- 价格可能高于宾得直销
Image quality 12
Autofocus performance 5
Build quality 6
Firmware compatibility 4
Bokeh 4
Value for money 3
Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD
82 满分 100 置信度中 16 条评价
Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD 被广泛称赞为索尼APS-C相机的一款多功能全能变焦镜头。用户喜爱其惊人的16.6倍变焦范围、广角端的近摄能力以及扎实的画质，尽管有人指出在70-80mm以上画质变软且自动对焦较慢。该镜头比典型的APS-C镜头更重，但仍被认为便携。少数已验证买家报告长焦端锐度问题和变焦环生涩，但大多数人认为它是替代多支定焦和变焦镜头的出色全能镜头。
优点
- 惊人的16.6倍变焦范围
- 广角端近摄（半微距）
- 良好的画质和色彩还原
- 坚固的机身带防尘防滴
- 有效的防抖（VC）
缺点
- 70-80mm以上画质变软
- 自动对焦比小型变焦慢
- 对APS-C来说又重又大
- 变焦环缩回时生涩
- 两端有中度畸变
Zoom range 12
Image quality 10
Autofocus speed 6
Build quality 8
Weight and size 7
Close focusing 5
评分
Budget
Portrait
Travel
Wildlife Sports
Macro
Video Cinema
Landscape
Professional
Street
规格
| Pentax HD PENTAX-FA 50mm f/1.4 50mm | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | |
|---|---|---|
| Optics | ||
| Type | prime | zoom |
| Focal Length Min | 50 mm | 18 mm |
| Focal Length Max | 50 mm | 300 mm |
| Elements | 7 | 19 |
| Groups | 6 | 5 |
| Aspherical Elements | 1 | 3★ |
| ED Elements | 1 | 4★ |
| Coating | Multilayer HD Coating | Fluorine Coating |
| Aperture | ||
| Max Aperture | f/22 | f/3.5 |
| Min Aperture | f/1.4 | 3.5-6.3 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 8★ | 7 |
| Build | ||
| Mount | Pentax K | Sony E |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.91 kg | 0.62 kg★ |
| Filter Thread | 49 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | Autofocus | VXD linear motor★ |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 450 mm | 150 mm★ |
| Max Magnification | 1:6.67 | 1:2 |
优缺点
Pentax HD PENTAX-FA 50mm f/1.4 50mm
- Strong social proof (86th percentile)86th %ile
- Strong user sentiment (81st percentile)81st %ile
- Below average bokeh (19th percentile)19th %ile
- Below average aperture (22nd percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD
- Strong versatility (99th percentile)99th %ile
- Strong af (98th percentile)98th %ile
- Strong optical (95th percentile)95th %ile
- Strong macro (87th percentile)87th %ile
价格
Pentax HD PENTAX-FA 50mm f/1.4 50mm0.123每美元得分
vs
Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD0.231每美元得分
Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD 性价比高 1.9 倍
结论
胜出: Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD
Scores 100 overall, wins 9 of 9 usage categories and 6 of 21 specs.
