Canon EF 17–40mm lens vs Sigma 12-24mm f/4 DG HSM Art
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sigma 12-24mm f/4 DG HSM Art goes wider (12mm vs 17mm).
- Canon EF 17–40mm lens reaches further (40mm vs 24mm).
| Spec | EF 17–40mm lens | 12-24mm f/4 DG HSM Art |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon EF | Canon EF |
| Type | Zoom | Wide Zoom |
| Focal length | 17-40mm | 12-24mm (wider) |
| Max aperture | f/4.0 | f/4.0 |
| Released | 2003 | n/a |
| Weight g | 500 | n/a |
| Filter mm | 77 | n/a |
| Length mm | 96.8 | 131.5 |
| Diameter mm | 83.5 | 102.0 |
| Min focus m | 0.28 | 0.24 (closer focusing) |
| Blades | n/a | 9 |
| Format | n/a | full-frame |
| Groups | n/a | 11 |
| Af motor | n/a | HSM |
| Elements | n/a | 16 |
| Max magnification | n/a | 0.2 |
Canon EF 17–40mm lens
The Canon EF 17–40mm lens is a wide-angle zoom lens covering 17-40mm at f/4 for Canon EF mount cameras. It covers wide angles for landscapes, interiors and architecture.
Sigma 12-24mm f/4 DG HSM Art
An ultra-wide zoom for full-frame DSLRs with a constant f/4 aperture. It has a bulbous front element without a screw-in filter thread and focuses as close as 0.24 m.
Pros
- Very wide 12mm end
- Constant f/4
- Close focus 0.24 m
- HSM autofocus
Cons
- No front filter thread
- Slower than f/2.8 zooms
- Large for an ultra-wide zoom