Viltrox AF 9mm F2.8 XF 9mm
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
What Buyers Say
Viltrox AF 9mm F2.8 XF 9mm
The Viltrox lenses receive overwhelmingly positive feedback for their exceptional value, sharp image quality, and solid build. Users praise the fast apertures and autofocus performance, though some note issues with chromatic aberration in high-contrast scenes and noisy autofocus on certain models. Overall, these lenses are seen as a budget-friendly alternative that punches above their price point.
Pros
- Excellent value for money
- Sharp image quality wide open
- Solid metal construction
- Fast and accurate autofocus
- Pleasing bokeh
Cons
- Chromatic aberration in high contrast
- Noisy autofocus in video
- Slow autofocus in low light
- No weather sealing
- Front-heavy on small bodies
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
| Viltrox AF 9mm F2.8 XF 9mm | Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm | |
|---|---|---|
| Optics | ||
| Type | wide-angle | zoom |
| Focal Length Min | 9 mm | 20 mm |
| Focal Length Max | 9 mm | 40 mm |
| Elements | 13 | 9 |
| Groups | 11 | 8 |
| Aspherical Elements | 2★ | 1 |
| ED Elements | 3★ | 1 |
| Coating | HD multilayer nano coating | HD coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/2.8 |
| Min Aperture | f/2.8 | 2.8-4 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Fujifilm X | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✗ | ✓★ |
| Weight | 0.17 kg★ | 0.28 kg |
| Filter Thread | 58 mm | 55 mm |
| AF & Stabilization | ||
| AF Type | STM★ | Autofocus |
| Stabilization | ✓ | ✓ |
| Focus | ||
| Min Focus Distance | 130 mm | 40 mm★ |
| Max Magnification | 1:6.66 | 1:5 |
Pros & Cons
Viltrox AF 9mm F2.8 XF 9mm
- Strong macro (89th percentile)89th %ile
- Strong build (87th percentile)87th %ile
- Strong social proof (87th percentile)87th %ile
- Strong aperture (86th percentile)86th %ile
- Below average versatility (34th 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 build (86th percentile)86th %ile
- Strong aperture (86th percentile)86th %ile
Verdict
Scores 93 overall, wins 8 of 9 usage categories and 5 of 21 specs.