Nikon NIKKOR Z 17-28mm f/2.8
Pentax DA 21790 55mm
What Buyers Say
Nikon NIKKOR Z 17-28mm f/2.8
The Nikon NIKKOR Z 17-28mm f/2.8 is widely praised for its sharpness, fast and quiet autofocus, and compact, lightweight design, making it a favorite for event, wedding, real estate, and travel photography. Users appreciate the constant f/2.8 aperture for low light and the internal zoom that keeps gimbals balanced. A few negative reviews mention resolution issues, excessive contrast, or that it's a rebranded Tamron, but the overall sentiment is very positive, with many calling it a great value.
Pros
- Sharp and crisp images
- Fast and quiet autofocus
- Compact and lightweight
- Constant f/2.8 aperture
- Internal zoom for gimbal balance
Cons
- Resolution issues in some copies
- Excessive contrast in images
- Rebranded Tamron design
- Not as sharp as S-line lenses
- Made in China
Pentax DA 21790 55mm
The Pentax DA* 55mm f/1.4 SDM lens receives overwhelmingly positive feedback for its sharpness, beautiful bokeh, and excellent performance in low light and portraits. Users praise its clarity and value, though some note it may have focusing issues on older Pentax DSLR bodies. Overall, it is considered a superb lens that delivers professional-quality results.
Pros
- Razor sharp image quality
- Beautiful smooth bokeh
- Excellent low-light performance
- Great for portraits and events
- Weather-sealed for outdoor use
Cons
- Potential focusing issues on older Pentax bodies
- Slightly large size
- Not as sharp as Carl Zeiss lenses
Scores
Specifications
| Nikon NIKKOR Z 17-28mm f/2.8 | Pentax DA 21790 55mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 17 mm | 55 mm |
| Focal Length Max | 28 mm | 55 mm |
| Elements | 13 | 9 |
| Groups | 11 | 8 |
| Aspherical Elements | 3★ | 0 |
| ED Elements | 3★ | 1 |
| Coating | antifouling coating | Aero Bright coating, Super Protect (SP) coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/1.4 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 9 | 9 |
| Build | ||
| Mount | Nikon Z | Pentax K |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.45 kg | 0.38 kg★ |
| Filter Thread | 67 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | Stepping Motor★ | SDM |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 190 mm★ | 450 mm |
| Max Magnification | 0.19x | 0.3x★ |
Pros & Cons
Nikon NIKKOR Z 17-28mm f/2.8
- Strong bokeh (91st percentile)91st %ile
- Strong aperture (88th percentile)88th %ile
- Strong optical (88th percentile)88th %ile
- Strong af (85th percentile)85th %ile
- Below average stabilization (34th percentile)
Pentax DA 21790 55mm
- Strong build (79th percentile)
- Strong user sentiment (66th percentile)
- Below average aperture (22nd percentile)
- Below average bokeh (25th percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Pricing
Verdict
Scores 78 overall, wins 9 of 9 usage categories and 5 of 21 specs.
