Canon EF-S 17-85mm f/4-5.6 IS USM vs Canon EF-S 18-55mm f/3.5-5.6 III
Prices & availability
Specification comparison
Highlighted rows differ between the two models.
| Specification | Canon EF-S 17-85mm f/4-5.6 IS USM | Canon EF-S 18-55mm f/3.5-5.6 III |
|---|---|---|
| Mount | ||
| Mount | canon-ef-s | canon-ef-s |
| Optics | ||
| Focal (difference) | 17-85 mm | 18-55 mm |
| Aperture (difference) | f/4.0-5.6 | f/3.5-5.6 |
| Prime | No | No |
| Stabilization (difference) | Yes | No |
| Build | ||
| Weight (g) (difference) | 475,000 g | — |
Verdict
Pick Model A if you need the extra reach to 85 mm and can accept the slightly dimmer f/4 maximum aperture at the wide end. Model B stays the better choice if you prioritize a lighter budget, a brighter f/3.5 aperture at 18 mm, and don’t require focal lengths beyond 55 mm.