Canon RF 24-105mm 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.
- Sigma 17-40mm f/1.8 DC goes wider (17mm vs 24mm).
- Canon RF 24-105mm F4 L IS USM reaches further (105mm vs 40mm).
| Spec | RF 24-105mm F4 L IS USM | 17-40mm f/1.8 DC |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon RF | Canon RF |
| Type | Zoom | Zoom |
| Focal length | 24-105mm | 17-40mm (wider) |
| Max aperture | f/4.0 | f/1.8 (faster) |
| Released | 2018 | n/a |
| Blades | 9 | 11 |
| Format | full-frame | aps-c |
| Groups | 14 | 11 |
| Af motor | USM | n/a |
| Elements | 18 | 17 |
| Weight g | 700.0 | n/a |
| Filter mm | 77 | n/a |
| Length mm | 107.3 | n/a |
| Stabilized | Yes | n/a |
| Diameter mm | 83.5 | n/a |
| Min focus m | 0.45 | 0.28 (closer focusing) |
| Max magnification | 0.24 | 0.21 |
Canon RF 24-105mm F4 L IS USM
A constant-f/4 standard zoom for Canon RF with stabilization and L-series build. It is a common kit lens with RF bodies.
Pros
- Wide 24-105mm range
- Constant f/4
- Image stabilization
- Weather-sealed
Cons
- Not bright for low light
- Relies on digital corrections
- Larger than the f/4-7.1 STM
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.