Viltrox AF 9mm F2.8 XF 9mm
Pentax Limited 21410 21mm
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 Limited 21410 21mm
The Pentax HD DA 21mm f/3.2 AL Limited lens receives overwhelmingly positive feedback for its compact size, excellent color rendering, and sharpness. Users praise it as a versatile walk-around lens for APS-C cameras, noting its solid build and quick focus. A few mention slight corner softness wide open and a limited field of view for landscapes, but overall it is highly recommended for its image quality and value.
Pros
- Compact and lightweight design
- Excellent color rendering
- Sharp image quality
- Fast and quiet autofocus
- Solid build quality
Cons
- Slight corner softness wide open
- Limited field of view for landscapes
- Not ideal for wide-angle landscape work
Scores
Specifications
| Viltrox AF 9mm F2.8 XF 9mm | Pentax Limited 21410 21mm | |
|---|---|---|
| Optics | ||
| Type | wide-angle | prime |
| Focal Length Min | 9 mm | 21 mm |
| Focal Length Max | 9 mm | 21 mm |
| Elements | 13 | 8 |
| Groups | 11 | 5 |
| Aspherical Elements | 2★ | — |
| ED Elements | 3★ | — |
| Coating | HD multilayer nano coating | HD coating, SP Protect coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/3.2 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 7 |
| Build | ||
| Mount | Fujifilm X | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✗ | — |
| Weight | 0.17 kg | 0.12 kg★ |
| Filter Thread | 58 mm | 49 mm |
| AF & Stabilization | ||
| AF Type | STM★ | Autofocus |
| Stabilization | ✓★ | ✗ |
| Focus | ||
| Min Focus Distance | 130 mm★ | 201 mm |
| Max Magnification | 1:6.66 | 1:5.9 |
Pros & Cons
Viltrox AF 9mm F2.8 XF 9mm
- Strong macro (89th percentile)89th %ile
- Strong build (87th percentile)87th %ile
- Strong social proof (86th percentile)86th %ile
- Strong aperture (86th percentile)86th %ile
- Below average versatility (34th percentile)
Pentax Limited 21410 21mm
- Strong build (95th percentile)95th %ile
- Strong macro (81st percentile)81st %ile
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (21st percentile)
- Below average versatility (34th percentile)
Pricing
Viltrox AF 9mm F2.8 XF 9mm offers 3.9x better value for money
Verdict
Scores 93 overall, wins 9 of 9 usage categories and 5 of 21 specs.
