Sigma Contemporary 18-50mm f/2.8 DC DN
Pentax Limited 21410 21mm
What Buyers Say
Sigma Contemporary 18-50mm f/2.8 DC DN
The Sigma 18-50mm f/2.8 DC DN Contemporary is widely praised as a compact, lightweight, and sharp standard zoom for APS-C mirrorless cameras. Users consistently highlight its excellent image quality, fast f/2.8 aperture, and affordable price as major strengths, making it a popular upgrade from kit lenses. Common criticisms include the lack of optical stabilization and a poorly designed lens hood, but overall sentiment is overwhelmingly positive.
Pros
- Excellent image sharpness
- Compact and lightweight design
- Fast f/2.8 constant aperture
- Great value for the price
- Fast and silent autofocus
Cons
- No optical image stabilization
- Poorly designed lens hood
- No weather sealing
- Plastic build quality
- Zoom ring direction opposite to Fujifilm
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
| Sigma Contemporary 18-50mm f/2.8 DC DN | Pentax Limited 21410 21mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 21 mm |
| Focal Length Max | 50 mm | 21 mm |
| Elements | 13 | 8 |
| Groups | 10 | 5 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1★ | — |
| Coating | Super Multi-Layer 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 | Sony E | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✓★ | — |
| Weight | 0.29 kg | 0.12 kg★ |
| Filter Thread | 55 mm | 49 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | Autofocus |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 201 mm |
| Max Magnification | 1:2.8 | 1:5.9 |
Pros & Cons
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong social proof (91st percentile)91st %ile
- Strong macro (90th percentile)90th %ile
- Strong aperture (86th percentile)86th %ile
- Strong build (85th percentile)85th %ile
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
Sigma Contemporary 18-50mm f/2.8 DC DN offers 1.3x better value for money
Verdict
Scores 99 overall, wins 9 of 9 usage categories and 5 of 21 specs.
