Sigma Art 17-40mm f/1.8 DC
Pentax HD Pentax-DA 21387 16-85mm
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 HD Pentax-DA 21387 16-85mm
The Pentax DA 16-85mm lens is widely praised for its sharpness, weather sealing, and versatile zoom range, making it a favorite walk-around lens for outdoor and travel photography. Users appreciate the solid build and consistent image quality, though some note slower autofocus in low light and a variable aperture as minor drawbacks. A few isolated reports of inconsistent quality exist, but overall sentiment is very positive.
Pros
- Excellent sharpness
- Weather sealing
- Versatile zoom range (16-85mm)
- Solid build quality
- Fast and accurate autofocus
Cons
- Variable aperture (f/3.5-5.6)
- Slow autofocus in low light
- No distance scale on focus ring
- Relatively expensive
- Inconsistent quality control in some units
Scores
Specifications
| Sigma Art 17-40mm f/1.8 DC | Pentax HD Pentax-DA 21387 16-85mm | |
|---|---|---|
| Optics | ||
| Type | zoom | zoom |
| Focal Length Min | 17 mm | 16 mm |
| Focal Length Max | 40 mm | 85 mm |
| Elements | 17 | 16 |
| Groups | 11 | 12 |
| Aspherical Elements | 4★ | 3 |
| ED Elements | 4★ | 1 |
| Coating | Super Multi-Layer Coating | HD Coating, SP (Super Protect) Coating |
| Aperture | ||
| Max Aperture | f/1.8 | 22-38★ |
| Min Aperture | f/1.8 | 3.5-5.6 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 11★ | 7 |
| Build | ||
| Mount | Fujifilm X | Pentax K |
| Format | APS-C | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg | 0.49 kg★ |
| Filter Thread | 67 mm | 72 mm |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | DC |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 280 mm★ | 350 mm |
| Max Magnification | 1:4.8★ | 0.26x |
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 HD Pentax-DA 21387 16-85mm
- Strong versatility (94th percentile)94th %ile
- Strong optical (89th percentile)89th %ile
- Strong build (71st percentile)
- Strong social proof (68th percentile)
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (22nd percentile)
- Below average stabilization (34th percentile)
Pricing
Sigma Art 17-40mm f/1.8 DC offers 1.3x better value for money
Verdict
Scores 97 overall, wins 9 of 9 usage categories and 6 of 21 specs.
