Canon RF 15-35mm F2.8 L IS USM vs Sigma 17-40mm f/1.8 DC
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Sigma
17-40mm f/1.8 DC
Verdict at a glance
- Sigma 17-40mm f/1.8 DC is faster by 1.3 stops (f/1.8 vs f/2.8), letting in more light.
- Canon RF 15-35mm F2.8 L IS USM goes wider (15mm vs 17mm).
- Sigma 17-40mm f/1.8 DC reaches further (40mm vs 35mm).
| Spec | RF 15-35mm F2.8 L IS USM | 17-40mm f/1.8 DC |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon RF | Canon RF |
| Type | Wide Zoom | Zoom |
| Focal length | 15-35mm (wider) | 17-40mm |
| Max aperture | f/2.8 | f/1.8 (faster) |
| Released | 2019 | n/a |
| Blades | 9 | 11 |
| Format | full-frame | aps-c |
| Groups | 12 | 11 |
| Af motor | USM | n/a |
| Elements | 16 | 17 |
| Weight g | 840.0 | n/a |
| Filter mm | 82 | n/a |
| Length mm | 126.8 | n/a |
| Stabilized | Yes | n/a |
| Diameter mm | 88.5 | n/a |
| Min focus m | 0.28 | 0.28 |
| Max magnification | 0.21 | 0.21 |
Canon RF 15-35mm F2.8 L IS USM
A wide-angle zoom for Canon RF full-frame cameras with a constant f/2.8 aperture and image stabilization, for landscape, event and video work.
Pros
- Constant f/2.8
- Image stabilization
- Weather-sealed L build
- Sharp across the frame
Cons
- Heavy for a wide zoom (840 g)
- 82mm filter thread
- Relies on in-camera correction
Sigma 17-40mm f/1.8 DC
This 17-40mm f/1.8 APS-C fast wide-angle zoom lens from Sigma fits Canon RF mount cameras. It covers wide angles for landscapes, interiors and architecture.