Sigma 16-28mm F2.8 DG DN | Contemporary vs Tamron 17-28mm F/2.8 Di III RXD
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Closest focus: 0.19 m on the 17-28mm F/2.8 Di III RXD, against 0.25 m on the 16-28mm F2.8 DG DN | Contemporary.
- Max magnification: 0.19× on the 17-28mm F/2.8 Di III RXD, against 0.18× on the 16-28mm F2.8 DG DN | Contemporary.
- Weight: 420 g on the 17-28mm F/2.8 Di III RXD, against 450 g on the 16-28mm F2.8 DG DN | Contemporary.
16-28mm F2.8 DG DN | Contemporary or 17-28mm F/2.8 Di III RXD: which should you buy?
On published specs the 16-28mm F2.8 DG DN | Contemporary leads the 17-28mm F/2.8 Di III RXD nowhere; buy it for its price, its handling or the lenses you already own.
Choose the 17-28mm F/2.8 Di III RXD for its closest focus, max magnification and weight.
On paper the 17-28mm F/2.8 Di III RXD wins more rows (3 to 0); if the 16-28mm F2.8 DG DN | Contemporary's strengths are the ones you shoot with, and its price is lower where you buy, it can still be the better buy.
 |  | |
|---|---|---|
| Lowest price today | $889 new | $899 new $698 used |
| Optics | ||
| Focal length | 16–28mm | 17–28mm |
| 35mm equivalent | 16–28mm (full frame) | 17–28mm (full frame) |
| 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/22 |
| Made for | Full frame | Full frame |
| Elements / groups | 16 / 11 | 13 / 11 |
| Aperture blades | 9 | 9 |
| Closest focus | 0.25 m | 0.19 m (best) |
| Max magnification | 0.18× | 0.19× (best) |
| Focus & handling | ||
| Autofocus | Yes (Stepping motor) | Yes (RXD) |
| Optical stabilisation | No | No |
| Weather sealed | — | Yes |
| Internal zoom | Yes | Yes |
| Aperture ring | No | No |
| Teleconverter compatible | No | No |
| Size & weight | ||
| Weight | 450 g | 420 g (best) |
| Diameter × length | 77.2 × 100.6 mm | 73 × 99 mm |
| Filter thread | 72 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.