Canon RF EF 50mm f/1.2L USM 50mm
Sigma Art 17-40mm f/1.8 DC
What Buyers Say
Canon RF EF 50mm f/1.2L USM 50mm
The Canon EF 50mm f/1.2L USM is a lens that divides opinion. Many users adore its dreamy, characterful rendering, creamy bokeh, and beautiful color, especially for portraits and low-light work. However, a significant number report issues with slow and unreliable autofocus, softness wide open, and a high price tag that doesn't always match the optical performance. It's a lens that rewards skill and patience but can frustrate those seeking clinical sharpness and fast, consistent AF.
Pros
- Beautiful creamy bokeh
- Dreamy, characterful rendering
- Excellent color and contrast
- Solid build quality
- Great for portraits and low light
Cons
- Slow and unreliable autofocus
- Soft wide open at f/1.2
- Very expensive
- Heavy and bulky
- Noticeable chromatic aberration
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
| Canon RF EF 50mm f/1.2L USM 50mm | Sigma Art 17-40mm f/1.8 DC | |
|---|---|---|
| Optics | ||
| Type | prime | zoom |
| Focal Length Min | 50 mm | 17 mm |
| Focal Length Max | 50 mm | 40 mm |
| Elements | 8 | 17 |
| Groups | 6 | 11 |
| Aspherical Elements | 1 | 4★ |
| ED Elements | 1 | 4★ |
| Coating | Super Spectra Coating | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/16 | f/1.8 |
| Min Aperture | f/1.2 | f/1.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 8 | 11★ |
| Build | ||
| Mount | Canon EF | Fujifilm X |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.95 kg | 0.54 kg★ |
| Filter Thread | 72 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | USM★ | HLA (High-response Linear Actuator) |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 450 mm | 280 mm★ |
| Max Magnification | 0.19x | 1:4.8★ |
Pros & Cons
Canon RF EF 50mm f/1.2L USM 50mm
- Strong af (93rd percentile)93rd %ile
- Strong social proof (91st percentile)91st %ile
- Below average user sentiment (32nd percentile)
- Below average macro (33rd percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th 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)
Verdict
Scores 96 overall, wins 9 of 9 usage categories and 6 of 21 specs.