Sigma Art 24-70mm F2.8 DG DN Art
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
What Buyers Say
Sigma Art 24-70mm F2.8 DG DN Art
The Sigma 24-70mm f/2.8 Art lens receives largely positive feedback for its sharp optics, solid build, and excellent value compared to OEM alternatives. Many users praise its image quality, especially in the center, and appreciate the included image stabilization. However, some reviewers report inconsistent autofocus, requiring micro-adjustments or the USB dock for calibration, and note that the lens is significantly heavy. A few copies exhibited soft corners or front/back focus issues.
Pros
- Sharp optics
- Solid build quality
- Great value for money
- Effective image stabilization (OS)
- Fast and quiet autofocus
Cons
- Heavy weight
- Inconsistent autofocus
- Soft corners at some focal lengths
- Needs micro-adjustment or USB dock for calibration
- Front/back focus issues on some copies
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
| Sigma Art 24-70mm F2.8 DG DN Art | Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm | |
|---|---|---|
| Optics | ||
| Type | zoom | zoom |
| Focal Length Min | 24 mm | 20 mm |
| Focal Length Max | 70 mm | 40 mm |
| Elements | 19 | 9 |
| Groups | 15 | 8 |
| Aspherical Elements | 4★ | 1 |
| ED Elements | 3★ | 1 |
| Coating | Super Multi-Layer Coating | HD coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/2.8 |
| Min Aperture | f/2.8 | 2.8-4 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 9 | 9 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 1.02 kg | 0.28 kg★ |
| Filter Thread | 82 mm | 55 mm |
| AF & Stabilization | ||
| AF Type | HSM | Autofocus |
| Stabilization | ✓ | ✓ |
| Stabilization Stops | 4 stops★ | — |
| Focus | ||
| Min Focus Distance | 170 mm | 40 mm★ |
| Max Magnification | 1:2.7 | 1:5 |
Pros & Cons
Sigma Art 24-70mm F2.8 DG DN Art
- Strong optical (98th percentile)98th %ile
- Strong social proof (94th percentile)94th %ile
- Strong stabilization (93rd percentile)93rd %ile
- Strong bokeh (89th percentile)89th %ile
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 4.1x better value for money
Verdict
Scores 97 overall, wins 7 of 9 usage categories and 5 of 22 specs.
