Tamron Di III VC 28-300mm f/4-7.1 Di III VC VXD 300mm
Pentax DA 21790 55mm
What Buyers Say
Tamron Di III VC 28-300mm f/4-7.1 Di III VC VXD 300mm
The Tamron 28-300mm super-zoom wins praise for its lightweight design, versatile focal range, and solid image quality. Users appreciate the compact build and smooth zoom mechanism, but note the slow aperture and trade-offs in sharpness compared to more expensive zooms. Verified reviewers find it an ideal travel lens that pairs well with Sony bodies.
Pros
- Lightweight design
- Versatile 28-300mm focal range
- Smooth zoom ring operation
- Compact build for travel
- Good integration with Sony bodies
Cons
- Small maximum aperture (f/4-7.1)
- Reduced sharpness vs. premium zooms
- Not an internal zoom lens
- Slow autofocus at high fps on some bodies
Pentax DA 21790 55mm
The Pentax DA* 55mm f/1.4 SDM lens receives overwhelmingly positive feedback for its sharpness, beautiful bokeh, and excellent performance in low light and portraits. Users praise its clarity and value, though some note it may have focusing issues on older Pentax DSLR bodies. Overall, it is considered a superb lens that delivers professional-quality results.
Pros
- Razor sharp image quality
- Beautiful smooth bokeh
- Excellent low-light performance
- Great for portraits and events
- Weather-sealed for outdoor use
Cons
- Potential focusing issues on older Pentax bodies
- Slightly large size
- Not as sharp as Carl Zeiss lenses
Scores
Specifications
| Tamron Di III VC 28-300mm f/4-7.1 Di III VC VXD 300mm | Pentax DA 21790 55mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 28 mm | 55 mm |
| Focal Length Max | 300 mm | 55 mm |
| Elements | 20 | 9 |
| Groups | 13 | 8 |
| Aspherical Elements | 3★ | 0 |
| ED Elements | 2★ | 1 |
| Coating | fluorine coating | Aero Bright coating, Super Protect (SP) coating |
| Aperture | ||
| Max Aperture | f/4 | f/22 |
| Min Aperture | 4-7.1 | f/1.4 |
| Constant | ✗ | ✓★ |
| Diaphragm Blades | 9 | 9 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.59 kg | 0.38 kg★ |
| Filter Thread | 67 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | VXD linear motor★ | SDM |
| Stabilization | ✓★ | ✗ |
| Focus | ||
| Min Focus Distance | 190 mm★ | 450 mm |
| Max Magnification | 1:2.8★ | 0.3x |
Pros & Cons
Tamron Di III VC 28-300mm f/4-7.1 Di III VC VXD 300mm
- Strong versatility (98th percentile)98th %ile
- Strong af (98th percentile)98th %ile
- Strong optical (96th percentile)96th %ile
- Strong user sentiment (92nd percentile)92nd %ile
Pentax DA 21790 55mm
- Strong build (79th percentile)
- Strong user sentiment (66th percentile)
- Below average aperture (22nd percentile)
- Below average bokeh (25th percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Pricing
Tamron Di III VC 28-300mm f/4-7.1 Di III VC VXD 300mm offers 2.8x better value for money
Verdict
Scores 100 overall, wins 9 of 9 usage categories and 7 of 21 specs.
