Sigma Art 17-40mm f/1.8 DC
Pentax DA 22177 50mm
What Buyers Say
Sigma Art 17-40mm f/1.8 DC
The Sigma 17-40mm f/1.8 DC DN Art lens is overwhelmingly praised for its exceptional image quality, fast constant aperture, and compact internal zoom design. Users highlight its sharpness, lightweight build, and excellent autofocus performance, especially on crop-sensor mirrorless cameras like the Canon R7 and Fujifilm bodies. A few questions about compatibility with specific cameras and features like weather sealing and aperture ring are noted, but the overall sentiment is extremely positive.
Pros
- Exceptional image quality
- Fast constant f/1.8 aperture
- Compact internal zoom design
- Lightweight build
- Sharp and bright photos
Cons
- No weather sealing mentioned
- No manual aperture ring on some mounts
- Compatibility questions with full-frame cameras
- Expensive for some buyers
Pentax DA 22177 50mm
This Pentax DA 50mm f/1.8 lens is widely praised for its outstanding optical quality, sharpness, and beautiful bokeh at an affordable price. Users note the all-plastic build feels solid despite being lightweight, though it lacks weather resistance, quick-shift focus, and a lens hood. The screw-drive autofocus is noisy and can hunt in low light, but the image quality and value make it a highly recommended prime lens for Pentax shooters.
Pros
- Outstanding optical quality and sharpness
- Beautiful bokeh
- Excellent value for money
- Lightweight and compact
- Solid build despite plastic construction
Cons
- No weather resistance
- No quick-shift focus
- No lens hood or case included
- Noisy screw-drive autofocus
- Autofocus hunts in low light
Scores
Specifications
| Sigma Art 17-40mm f/1.8 DC | Pentax DA 22177 50mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 17 mm | 50 mm |
| Focal Length Max | 40 mm | 50 mm |
| Elements | 17 | 6 |
| Groups | 11 | 5 |
| Aspherical Elements | 4★ | — |
| ED Elements | 4★ | — |
| Coating | Super Multi-Layer Coating | SP Coating |
| Aperture | ||
| Max Aperture | f/1.8 | f/22 |
| Min Aperture | f/1.8 | f/1.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 11★ | 7 |
| Build | ||
| Mount | Fujifilm X | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.54 kg | 0.12 kg★ |
| Filter Thread | 67 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | Autofocus |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 280 mm★ | 451 mm |
| Max Magnification | 1:4.8 | 1:6.67 |
Pros & Cons
Sigma Art 17-40mm f/1.8 DC
- Strong user sentiment (98th percentile)98th %ile
- Strong bokeh (97th percentile)97th %ile
- Strong optical (97th percentile)97th %ile
- Strong aperture (95th percentile)95th %ile
- Below average stabilization (34th percentile)
Pentax DA 22177 50mm
- Strong build (93rd percentile)93rd %ile
- Strong user sentiment (92nd percentile)92nd %ile
- Strong social proof (86th percentile)86th %ile
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (22nd percentile)
- Below average optical (31st percentile)
- Below average versatility (33rd percentile)
Verdict
Scores 96 overall, wins 9 of 9 usage categories and 5 of 21 specs.