Canon L EF 17-40mm f/4L USM
Canon
61 Overall Score
vs
Sigma APO DG OS HSM 120-400mm f/4.5-5.6 AF APO DG OS HSM
Sigma
55 Overall Score
What Buyers Say
Canon L EF 17-40mm f/4L USM
No customer feedback yet
Sigma APO DG OS HSM 120-400mm f/4.5-5.6 AF APO DG OS HSM
72 out of 100 low confidence 8 reviews
The Sigma 120-400mm lens receives mixed feedback. Many users praise its image quality, optical stabilization, and value for money compared to Canon's 100-400 L series, but note it is very heavy and requires good light for sharp results. A few reviewers experienced severe blurriness or autofocus issues, while others found it excellent for wildlife and sports photography when used correctly.
Pros
- Good image quality for the price
- Effective optical stabilization
- Quiet and fast HSM autofocus
- Solid build quality
- Good value compared to Canon 100-400 L
Cons
- Very heavy and bulky
- Requires good light for sharpness
- Lens creep when pointed down
- Autofocus can hunt or shake initially
- OS cannot be used on tripod
Image quality 6
Weight and portability 5
Value for money 4
Optical stabilization 4
Autofocus performance 3
Build quality 3
Scores
Travel
Landscape
Portrait
Budget
Professional
Wildlife Sports
Macro
Video Cinema
Street
Specifications
| Canon L EF 17-40mm f/4L USM | Sigma APO DG OS HSM 120-400mm f/4.5-5.6 AF APO DG OS HSM | |
|---|---|---|
| Optics | ||
| Type | zoom | telephoto |
| Focal Length Min | 17 mm | 120 mm |
| Focal Length Max | 40 mm | 400 mm |
| Elements | 12 | 21 |
| Groups | 9 | 15 |
| Aspherical Elements | 3★ | — |
| ED Elements | 1 | 3★ |
| Coating | Super Spectra coating | Super multi-layer coating |
| Aperture | ||
| Max Aperture | f/22 | f/4.5 |
| Min Aperture | f/4 | 4.5-5.6 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Canon EF | Nikon F |
| Format | full-frame | full-frame |
| Weather Sealed | ✓★ | — |
| Weight | 0.50 kg★ | 1.64 kg |
| Filter Thread | 77 mm | 77 mm |
| AF & Stabilization | ||
| AF Type | USM★ | HSM |
| Stabilization | ✗ | ✓★ |
| Stabilization Stops | — | 4 stops★ |
| Focus | ||
| Min Focus Distance | 280 mm★ | 1.50 m |
| Max Magnification | 0.24x | 1:4.2★ |
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)
Sigma APO DG OS HSM 120-400mm f/4.5-5.6 AF APO DG OS HSM
- Strong optical (94th percentile)94th %ile
- Strong stabilization (92nd percentile)92nd %ile
- Strong versatility (84th percentile)84th %ile
- Strong bokeh (81st percentile)81st %ile
- Below average build (9th percentile)9th %ile
- Below average user sentiment (17th percentile)17th %ile
Pricing
Canon L EF 17-40mm f/4L USM0.149score per dollar
vs
Sigma APO DG OS HSM 120-400mm f/4.5-5.6 AF APO DG OS HSM0.048score per dollar
Canon L EF 17-40mm f/4L USM offers 3.1x better value for money
Verdict
Winner: Canon L EF 17-40mm f/4L USM
Scores 61 overall, wins 5 of 9 usage categories and 6 of 22 specs.
