Canon L EF 17-40mm f/4L USM
Canon
61 Overall Score
vs
Samyang ED UMC 135mm f/2.0 ED UMC 135mm
Samyang
35 Overall Score
What Buyers Say
Canon L EF 17-40mm f/4L USM
No customer feedback yet
Samyang ED UMC 135mm f/2.0 ED UMC 135mm
85 out of 100 medium confidence 27 reviews
The Samyang 135mm f/2.0 ED UMC manual focus lens is highly praised for its exceptional sharpness, beautiful bokeh, and outstanding performance in astrophotography. Users note that it requires patience and practice to master manual focusing, especially at f/2, but the image quality rivals much more expensive lenses. The build is solid but heavy, and it lacks weather sealing and electronic communication with the camera. Despite these drawbacks, it is considered a fantastic value for photographers who can work with manual focus.
Pros
- Exceptional sharpness
- Beautiful bokeh
- Excellent for astrophotography
- Solid build quality
- Great value for money
Cons
- Heavy weight
- No autofocus
- No weather sealing
- No electronic communication with camera
- Stiff focus ring initially
Image quality 12
Build quality 8
Value for money 7
Manual focus difficulty 9
Weight 6
Weather sealing 3
Scores
Travel
Landscape
Budget
Professional
Wildlife Sports
Street
Video Cinema
Macro
Portrait
Specifications
| Canon L EF 17-40mm f/4L USM | Samyang ED UMC 135mm f/2.0 ED UMC 135mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 17 mm | 135 mm |
| Focal Length Max | 40 mm | 135 mm |
| Elements | 12 | 11 |
| Groups | 9 | 7 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1 | 1 |
| Coating | Super Spectra coating | Ultra Multi-Coating |
| Aperture | ||
| Max Aperture | f/22 | f/22 |
| Min Aperture | f/4 | f/2 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Canon EF | Nikon F |
| Format | full-frame | full-frame |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.50 kg★ | 0.82 kg |
| Filter Thread | 77 mm | 77 mm |
| AF & Stabilization | ||
| AF Type | USM★ | manual focus only |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 280 mm★ | 800 mm |
| Max Magnification | 0.24x★ | — |
Pros & Cons
Canon L EF 17-40mm f/4L USM
- Strong af (93rd percentile)93rd %ile
- Strong social proof (86th percentile)86th %ile
- Strong optical (78th percentile)
- Strong versatility (76th percentile)
- Below average bokeh (14th percentile)14th %ile
- Below average aperture (22nd percentile)
- Below average stabilization (34th percentile)
Samyang ED UMC 135mm f/2.0 ED UMC 135mm
- Strong social proof (81st percentile)81st %ile
- Strong user sentiment (66th percentile)
- Below average af (15th percentile)15th %ile
- Below average build (21st percentile)
- Below average aperture (22nd percentile)
- Below average bokeh (25th percentile)
Pricing
Canon L EF 17-40mm f/4L USM0.005score per dollar
vs
Samyang ED UMC 135mm f/2.0 ED UMC 135mm0.002score per dollar
Canon L EF 17-40mm f/4L USM offers 2.5x better value for money
Verdict
Winner: Canon L EF 17-40mm f/4L USM
Scores 61 overall, wins 9 of 9 usage categories and 6 of 21 specs.
