Sigma Art 17-40mm f/1.8 DC
Brightin Star AF 12mm f/2.8 12mm
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
Brightin Star AF 12mm f/2.8 12mm
The Brightin Star 35mm f/0.95 manual lens is praised for its exceptional sharpness, fast aperture, and build quality, especially given its budget-friendly price. However, some users note it's a specialty lens requiring practice for manual focus, and at least one reviewer reported compatibility issues with certain Canon EOS R7 firmware. The Sony 70-200mm f/2.8 GM II lens receives high marks for sharpness and fast autofocus, but several Q&A posts raise concerns about internal movement when the camera is off. Overall, sentiment is very positive for both lenses, with a few isolated negatives.
Pros
- Excellent sharpness
- Fast f/0.95 aperture
- Affordable price
- Solid build quality
- Beautiful bokeh
Cons
- Manual focus requires practice
- No autofocus
- Potential compatibility issues with Canon R7 firmware
- Specialty lens not for beginners
- Heavy all-metal construction
Scores
Specifications
| Sigma Art 17-40mm f/1.8 DC | Brightin Star AF 12mm f/2.8 12mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 17 mm | 12 mm |
| Focal Length Max | 40 mm | 12 mm |
| Elements | 17 | 15 |
| Groups | 11 | 11 |
| Aspherical Elements | 4★ | 2 |
| ED Elements | 4★ | 2 |
| Coating | Super Multi-Layer Coating | Multicoated |
| Aperture | ||
| Max Aperture | f/1.8 | f/16 |
| Min Aperture | f/1.8 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 11★ | 5 |
| Build | ||
| Mount | Fujifilm X | Canon RF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg★ | 0.55 kg |
| Filter Thread | 67 mm | 34 mm |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | manual focus only |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 280 mm | 240 mm★ |
| Max Magnification | 1:4.8 | 2:1★ |
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)
Brightin Star AF 12mm f/2.8 12mm
- Strong social proof (91st percentile)91st %ile
- Strong macro (90th percentile)90th %ile
- Strong optical (86th percentile)86th %ile
- Strong build (66th percentile)
- Below average bokeh (9th percentile)9th %ile
- Below average af (15th percentile)15th %ile
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Verdict
Scores 96 overall, wins 9 of 9 usage categories and 4 of 21 specs.