Highlighted rows differ between the two models.
| Specification | Canon EF-S 18-135mm f/3.5-5.6 IS | Sigma 18-125mm f/3.5-5.6 DC - Monture Canon EF-S |
|---|---|---|
| Mount | ||
| Mount | canon-ef-s | canon-ef-s |
| Optics | ||
| Focal (difference) | 18-135 mm | 18-125 mm |
| Aperture | f/3.5-5.6 | f/3.5-5.6 |
| Prime | No | No |
| Stabilization (difference) | Yes | No |
| Build | ||
| Weight (g) (difference) | 455,000 g | — |
Pick Model A if you need the extra 10 mm reach at the long end and can accept the higher price. Model B stays the better choice if budget is tight and the slight reduction in telephoto range is not critical.