Tamron Di III 17-70mm f/2.8 Di III-A VC RXD 70mm
Tamron
97 综合评分
vs
Pentax HD PENTAX-D FA 28050 21mm
Pentax
55 综合评分
评分
Video Cinema
Budget
Macro
Professional
Travel
Portrait
Landscape
Street
Wildlife Sports
规格
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD 70mm | Pentax HD PENTAX-D FA 28050 21mm | |
|---|---|---|
| Optics | ||
| Type | zoom | wide-angle |
| Focal Length Min | 17 mm | 21 mm |
| Focal Length Max | 70 mm | 21 mm |
| Elements | 16 | 11 |
| Groups | 12 | 8 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 2 | 4★ |
| Coating | Fluorine Coating | High-Grade Multi-Layer HD Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/2.4 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 9★ | 8 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg | 0.42 kg★ |
| Filter Thread | 67 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | RXD | Autofocus |
| Stabilization | ✓★ | ✗ |
| Focus | ||
| Min Focus Distance | 190 mm | 180 mm★ |
| Max Magnification | 1:4.8 | 1:3.85 |
优缺点
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD 70mm
- Strong optical (91st percentile)91st %ile
- Strong versatility (90th percentile)90th %ile
- Strong bokeh (87th percentile)87th %ile
- Strong macro (86th percentile)86th %ile
Pentax HD PENTAX-D FA 28050 21mm
- Strong macro (87th percentile)87th %ile
- Strong build (77th percentile)
- Strong optical (76th percentile)
- Below average bokeh (18th percentile)18th %ile
- Below average aperture (20th percentile)20th %ile
- Below average versatility (34th percentile)
价格
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD 70mm0.119每美元得分
vs
Pentax HD PENTAX-D FA 28050 21mm0.045每美元得分
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD 70mm 性价比高 2.6 倍
结论
胜出: Tamron Di III 17-70mm f/2.8 Di III-A VC RXD 70mm
Scores 97 overall, wins 9 of 9 usage categories and 3 of 21 specs.
