Canon RF 14-35mm F4 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 2.3 stops (f/1.8 vs f/4.0), letting in more light.
- Canon RF 14-35mm F4 L IS USM goes wider (14mm vs 17mm).
- Sigma 17-40mm f/1.8 DC reaches further (40mm vs 35mm).
| Spec | RF 14-35mm F4 L IS USM | 17-40mm f/1.8 DC |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon RF | Canon RF |
| Type | Wide Zoom | Zoom |
| Focal length | 14-35mm (wider) | 17-40mm |
| Max aperture | f/4.0 | f/1.8 (faster) |
| Released | 2021 | n/a |
| Blades | 9 | 11 |
| Format | full-frame | aps-c |
| Groups | 12 | 11 |
| Af motor | USM | n/a |
| Elements | 16 | 17 |
| Weight g | 540.0 | n/a |
| Filter mm | 77 | n/a |
| Length mm | 99.8 | n/a |
| Stabilized | Yes | n/a |
| Diameter mm | 84.1 | n/a |
| Min focus m | 0.2 (closer focusing) | 0.28 |
| Max magnification | 0.38 | 0.21 |
Canon RF 14-35mm F4 L IS USM
The RF 14-35mm F4 L IS USM is a compact stabilized wide zoom for Canon RF full-frame cameras. Starts at 14mm and keeps f/4 throughout.
Pros
- Wide 14mm start
- Compact and light (540 g)
- Image stabilization
- Constant f/4
Cons
- Only f/4
- Relies on software lens correction
- Less light than the 15-35 f/2.8
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.