Rokinon HD 8mm f/3.5 HD Fisheye 8mm
Sigma Art 17-40mm f/1.8 DC
What Buyers Say
Rokinon HD 8mm f/3.5 HD Fisheye 8mm
This Rokinon 8mm f/3.5 fisheye lens is praised for its excellent value, solid build, and creative potential, especially on APS-C cameras where it delivers a full-frame diagonal fisheye effect. Users love the fun perspective it adds to landscapes, portraits, and skateboarding or astro shots, though they note it requires manual focus and aperture control. Some edge softness and chromatic aberration are mentioned, but these are correctable in post. Issues with full-frame cameras (heavy vignette) and inconsistent compatibility with certain Nikon bodies (e.g., D3500) are recurring drawbacks, and a few users reported a broken focusing ring or cheap-feeling barrel.
Pros
- Great value for money
- Solid build quality
- Fun and creative perspective
- Sharp when stopped down (f/5.6-f/8)
- Lightweight and compact
Cons
- Manual focus only
- Soft edges wide open
- Chromatic aberration at edges
- Not ideal for full-frame cameras (heavy vignette)
- Incompatible with some Nikon bodies (e.g., D3500)
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
Scores
Specifications
| Rokinon HD 8mm f/3.5 HD Fisheye 8mm | Sigma Art 17-40mm f/1.8 DC | |
|---|---|---|
| Optics | ||
| Type | fisheye | zoom |
| Focal Length Min | 8 mm | 17 mm |
| Focal Length Max | 8 mm | 40 mm |
| Elements | 10 | 17 |
| Groups | 7 | 11 |
| Aspherical Elements | 1 | 4★ |
| ED Elements | — | 4★ |
| Coating | super multi-layer coating | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/22 | f/1.8 |
| Min Aperture | f/3.5 | f/1.8 |
| Constant | ✗ | ✓★ |
| Diaphragm Blades | 6 | 11★ |
| Build | ||
| Mount | Canon EF | Fujifilm X |
| Format | APS-C | APS-C |
| Weather Sealed | ✗ | ✓★ |
| Weight | 0.43 kg★ | 0.54 kg |
| Filter Thread | 67 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | manual focus only | HLA (High-response Linear Actuator) |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 305 mm | 280 mm★ |
| Max Magnification | — | 1:4.8★ |
Pros & Cons
Rokinon HD 8mm f/3.5 HD Fisheye 8mm
- Strong social proof (77th percentile)
- Strong macro (67th percentile)
- Below average bokeh (6th percentile)6th %ile
- Below average af (15th percentile)15th %ile
- Below average aperture (22nd percentile)
- Below average versatility (33rd percentile)
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)
Pricing
Rokinon HD 8mm f/3.5 HD Fisheye 8mm offers 1.4x better value for money
Verdict
Scores 96 overall, wins 9 of 9 usage categories and 7 of 21 specs.
