Sigma 10-18mm F2.8 DC DN | Contemporary vs Tamron 11-20mm F/2.8 Di III-A RXD
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Closest focus: 0.12 m on the 10-18mm F2.8 DC DN | Contemporary, against 0.15 m on the 11-20mm F/2.8 Di III-A RXD.
- Weight: 260 g on the 10-18mm F2.8 DC DN | Contemporary, against 335 g on the 11-20mm F/2.8 Di III-A RXD.
 |  | |
|---|---|---|
| Lowest price today | $679 new | $648 new $529 used |
| Optics | ||
| Focal length | 10–18mm | 11–20mm |
| 35mm equivalent | 15–27mm equivalent (16–29mm on Canon) | 17–30mm equivalent (18–32mm on Canon) |
| Maximum apertureLower f-number lets in more light. A zoom wins only when it is as bright at both ends. | f/2.8 | f/2.8 |
| Minimum aperture | f/22 | f/16 |
| Made for | APS-C | APS-C |
| Elements / groups | 13 / 10 | 12 / 10 |
| Aperture blades | 7 | 7 |
| Closest focus | 0.12 m (best) | 0.15 m |
| Max magnification | 0.25× | 0.25× |
| Focus & handling | ||
| Autofocus | Yes (Stepping motor) | Yes (RXD) |
| Optical stabilisation | No | No |
| Weather sealed | — | Yes |
| Internal zoom | — | — |
| Aperture ring | No | No |
| Teleconverter compatible | No | No |
| Size & weight | ||
| Weight | 260 g (best) | 335 g |
| Diameter × length | 72.2 × 62 mm | 73 × 86.2 mm |
| Filter thread | 67 mm | 67 mm |
Green marks the better figure where “better” is unambiguous. A dash means the maker doesn't publish it or we haven't verified it yet.