Canon EF 28-70mm f/2.8L USM vs Sigma 17-50mm f/2.8 EX DC OS HSM
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sigma 17-50mm f/2.8 EX DC OS HSM is faster by 6.6 stops (f/2.8 vs f/28.0), letting in more light.
- Sigma 17-50mm f/2.8 EX DC OS HSM is lighter by 315g.
- Sigma 17-50mm f/2.8 EX DC OS HSM goes wider (17mm vs 28mm).
- Canon EF 28-70mm f/2.8L USM reaches further (70mm vs 50mm).
| Spec | EF 28-70mm f/2.8L USM | 17-50mm f/2.8 EX DC OS HSM |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon EF | Canon EF |
| Type | Zoom | Zoom |
| Focal length | 28-70mm | 17-50mm (wider) |
| Max aperture | f/28.0 | f/2.8 (faster) |
| Released | 1993 | n/a |
| Blades | 8 | 7 |
| Format | full-frame | aps-c |
| Groups | 11 | 13 |
| Af motor | USM | HSM |
| Elements | 16 | 17 |
| Weight g | 880.0 | 565 (lighter) |
| Filter mm | 77 | 77 |
| Length mm | 117.6 | 91.8 |
| Diameter mm | 83.2 | 83.5 |
| Min focus m | 0.5 | 0.28 (closer focusing) |
| Max magnification | 0.18 | 0.2 |
| Stabilized | n/a | Yes |
Canon EF 28-70mm f/2.8L USM
Canon's 1993 pro standard zoom with a constant f/2.8 aperture. The EF 24-70mm f/2.8L replaced it in 2002.
Pros
- f/2.8 across the range
- L-series build
- Ring USM
Cons
- Heavy at about 880g
- No wide 24mm end
- Softer than modern 24-70mm lenses
Sigma 17-50mm f/2.8 EX DC OS HSM
A constant f/2.8 standard zoom for APS-C DSLRs with Optical Stabilizer and a hypersonic motor. It weighs about 565 g.
Pros
- Constant f/2.8
- Optical Stabilizer
- HSM autofocus
Cons
- APS-C only
- Older design
More comparisons for Canon EF 28-70mm f/2.8L USM
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- Canon EF 28-70mm f/2.8L USM vs Tokina AF 16-28mm f/2.8 AT-X Pro SD FX
- Canon EF 28-70mm f/2.8L USM vs Sigma 60-600mm f/4.5-6.3 DG OS HSM Sport