Canon RF-S 10-18mm F4.5-6.3 IS STM vs Sigma 17-40mm F1.8 DC | Art 025
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sigma 17-40mm F1.8 DC | Art 025 is faster by 2.6 stops (f/1.8 vs f/4.5), letting in more light.
- Canon RF-S 10-18mm F4.5-6.3 IS STM is lighter by 410g.
- Canon RF-S 10-18mm F4.5-6.3 IS STM goes wider (10mm vs 17mm).
- Sigma 17-40mm F1.8 DC | Art 025 reaches further (40mm vs 18mm).
| Spec | RF-S 10-18mm F4.5-6.3 IS STM | 17-40mm F1.8 DC | Art 025 |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon RF | Canon RF |
| Type | Wide Zoom | Zoom |
| Focal length | 10-18mm (wider) | 17-40mm |
| Max aperture | f/4.5 | f/1.8 (faster) |
| Released | 2023 | n/a |
| Blades | 7 | 11 |
| Format | aps-c | aps-c |
| Groups | 10 | 11 |
| Af motor | STM | n/a |
| Elements | 12 | 17 |
| Weight g | 150.0 (lighter) | 560 |
| Length mm | 44.9 | 115.9 |
| Stabilized | Yes | n/a |
| Diameter mm | 69.0 | 72.9 |
| Filter mm | n/a | 67 |
| Min focus m | n/a | 0.28 |
| Max magnification | n/a | 0.21 |
Canon RF-S 10-18mm F4.5-6.3 IS STM
The RF-S 10-18mm F4.5-6.3 IS STM is a compact ultra-wide zoom for Canon APS-C RF cameras with stabilization, giving about a 16-29mm full-frame equivalent.
Pros
- Very compact (150 g)
- Image stabilization
- Wide-angle view on APS-C
Cons
- Slow variable aperture
- Relies on in-camera distortion correction
Sigma 17-40mm F1.8 DC | Art 025
The Sigma 17-40mm F1.8 DC | Art 025 is an APS-C fast wide-angle zoom lens covering 17-40mm at f/1.8 for Canon RF mount cameras, from the Sigma Art line. It covers wide angles for landscapes, interiors and architecture.