Highlighted rows differ between the two models.
| Specification | Sigma 18-125mm f/3.5-5.6 DC - Monture Canon EF-S | Tamron 18-270mm f/3.5-6.3 Di II VC PZD - Monture Canon EF-S |
|---|---|---|
| Mount | ||
| Mount | canon-ef-s | canon-ef-s |
| Optics | ||
| Focal (difference) | 18-125 mm | 18-270 mm |
| Aperture (difference) | f/3.5-5.6 | f/3.5-6.3 |
| Prime | No | No |
| Stabilization (difference) | No | Yes |
Pick Model A if you prioritize a lower price and slightly brighter aperture at the telephoto end, or if 125mm is enough reach for your needs. Model B stays the better choice if you need the extra zoom range to 270mm and can accept the higher cost and slightly dimmer maximum aperture at the long end.