Tamron Di III 150-500mm F5-6.7 Di III VC VXD
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
What Buyers Say
Tamron Di III 150-500mm F5-6.7 Di III VC VXD
The Tamron 150-500mm lens is widely praised for its sharpness, fast autofocus, and excellent value compared to native telephoto zooms. Many users appreciate the extra reach and image quality, though the weight is a common concern, especially for handheld use. Some reviewers note trade-offs in low-light performance and stabilization, and a few report compatibility issues with teleconverters or defective copies.
Pros
- Excellent sharpness
- Fast and accurate autofocus
- Great value for money
- Extra reach over 100-400mm
- Effective image stabilization (VC)
Cons
- Heavy for handheld use
- Average low-light performance
- Stabilization not as good as native lenses
- No teleconverter compatibility
- Some copies may be defective
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
The Pentax HD DA 20-40mm f/2.8-4 ED Limited DC WR lens is highly praised for its superb build quality, sharpness, and beautiful color rendition. Users love it as a versatile walk-around lens for street photography and landscapes, especially on APS-C bodies like the K-3. The main drawbacks are its variable aperture and a price that many feel is too high for the performance gain over kit lenses.
Pros
- Superb build quality
- Excellent sharpness
- Beautiful color rendition
- Weather resistant
- Versatile focal range for street and landscape
Cons
- Variable aperture (f/2.8-4)
- High price for performance gain
- Limited zoom range
- Not as wide as some kit lenses
Scores
Specifications
| Tamron Di III 150-500mm F5-6.7 Di III VC VXD | Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm | |
|---|---|---|
| Optics | ||
| Type | super-telephoto | zoom |
| Focal Length Min | 150 mm | 20 mm |
| Focal Length Max | 500 mm | 40 mm |
| Elements | 25 | 9 |
| Groups | 16 | 8 |
| Aspherical Elements | 1 | 1 |
| ED Elements | 5★ | 1 |
| Coating | BBAR-G2 and fluorine coatings | HD coating |
| Aperture | ||
| Max Aperture | f/5 | f/2.8 |
| Min Aperture | 5-6.7 | 2.8-4 |
| Constant | ✗ | ✗ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Fujifilm X | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 1.73 kg | 0.28 kg★ |
| Filter Thread | 82 mm | 55 mm |
| AF & Stabilization | ||
| AF Type | VXD linear autofocus motor | Autofocus |
| Stabilization | ✓ | ✓ |
| Focus | ||
| Min Focus Distance | 600 mm | 40 mm★ |
| Max Magnification | 1:3.1 | 1:5 |
Pros & Cons
Tamron Di III 150-500mm F5-6.7 Di III VC VXD
- Strong optical (99th percentile)99th %ile
- Strong versatility (84th percentile)84th %ile
- Strong stabilization (80th percentile)80th %ile
- Below average build (15th percentile)15th %ile
- Below average social proof (25th percentile)
- Below average user sentiment (30th percentile)
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
- Strong macro (97th percentile)97th %ile
- Strong bokeh (89th percentile)89th %ile
- Strong aperture (86th percentile)86th %ile
- Strong build (86th percentile)86th %ile
Pricing
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm offers 2.0x better value for money
Verdict
Scores 86 overall, wins 9 of 9 usage categories and 3 of 21 specs.
