New On sale 25%
Canon L EF 17-40mm USM 40mm
Focal length 40mm
Aperture f/4
Mount Canon EF
Weight 499 g
af type Autofocus
54 Overall Score
Price CA$840
Snapshot
Pros & Cons
Pros
- Strong social proof (78th percentile) 78th
- Strong macro (74th percentile) 74th
- Strong aperture (70th percentile) 70th
- Strong bokeh (68th percentile) 68th
Cons
- Below average versatility (34th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 8 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Focal Length Min | 40 |
| Focal Length Max | 40 |
| Elements | 12 |
| Groups | 9 |
Aperture
| Max Aperture | f/4 |
| Min Aperture | f/22 |
| Diaphragm Blades | 7 |
Build
| Mount | Canon EF |
| Format | Full-Frame |
| Weight | 0.5 kg / 1.1 lbs |
| Filter Thread | 77 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 280 |
| Max Magnification | 1:4.2 |
vs Competition
| Spec | Canon L EF 17-40mm USM 40mm | Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12060 | Sony G SELP28135G.SYX |
|---|---|---|---|---|---|---|
| Focal Length | 40mm | 18-140mm | 28-75mm | 10-18mm | 12-60mm | 28-135mm |
| Max Aperture | f/4 | f/3.5 | f/2.8 | f/2.8 | f/2.8 | f/4 |
| Mount | Canon EF | Nikon Z | Sony E | Sony E | Micro Four Thirds | Sony E |
| Stabilization | false | true | false | false | true | true |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 499 | 315 | 540 | 260 | 320 | 420 |
| AF Type | Autofocus | stepping motor | VXD | Autofocus | linear motor | SSM |
| Lens Type | - | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Canon L EF 17-40mm USM 40mm | 54.6 | 68.3 | 53.8 | 74.4 | 48.8 | 69.8 | 33.6 | 78.2 | 37.9 |
| Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR Compare | 86.9 | 77.7 | 83.8 | 82.6 | 88.5 | 79.7 | 96.2 | 32.2 | 96.6 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88 | 67.2 | 87.3 | 87.8 | 85.6 | 78.2 | 83.3 | 37.9 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.4 | 87.1 | 93.3 | 81.5 | 85.6 | 69 | 69.2 | 37.9 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88 | 83 | 50.2 | 90.2 | 85.6 | 93.1 | 63.9 | 83.2 |
| Sony G SELP28135G.SYX Compare | 94.2 | 80.1 | 75.4 | 31 | 86.9 | 69.8 | 92.3 | 50.6 | 92.8 |
Price
Value & Pricing
From CA$840
B&H Photo 1 offer From CA$840
We started tracking prices for this product on Jul 19, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
