Highlighted rows differ between the two models.
| Specification | Tamron AF 28-200mm f/3.5-5.6 XR Di Aspherical (IF) Macro - Monture Canon EF | Tamron AF 70-300mm f/4-5.6 Di LD Macro - Monture Canon EF |
|---|---|---|
| Mount | ||
| Mount | canon-ef | canon-ef |
| Optics | ||
| Focal (difference) | 28-200 mm | 70-300 mm |
| Aperture (difference) | f/3.5-5.6 | f/4.0-5.6 |
| Prime | No | No |
| Stabilization | No | No |
Pick Model A if you need a true wide-angle starting point (28 mm) and a brighter f/3.5 aperture at the wide end for low-light or indoor shots. Model B stays the better choice if your priority is extra reach (300 mm) and you can accept the narrower 70 mm starting focal length and slightly dimmer f/4 aperture.