Highlighted rows differ between the two models.
| Specification | Sigma 12-24mm f/4.5-5.6 EX DG HSM - Monture Nikon | Sigma 170-500mm f/5-6.3 APO - Monture Nikon |
|---|---|---|
| Mount | ||
| Mount | nikon-f | nikon-f |
| Optics | ||
| Focal (difference) | 12-24 mm | 170-500 mm |
| Aperture (difference) | f/4.5-5.6 | f/5.0-6.3 |
| Prime | No | No |
| Stabilization | No | No |
Pick Model A if you need an ultra-wide-angle zoom for landscapes, architecture, or tight interiors and can accept a modest f/4.5 maximum aperture. Choose Model B if your priority is extreme telephoto reach for wildlife or sports and you’re willing to trade wider angles and a slightly higher price for 500 mm capability.