Tamron Di III 17-70mm f/2.8 -A VC RXD
A constant f/2.8 aperture across the 17-70mm zoom range (25.5-105mm full-frame equivalent) paired with VC stabilization makes this the first high-speed standard zoom for Sony APS-C bodies. Advanced optics with aspherical and low dispersion elements ensure sharp, high-contrast images, while the RXD motor delivers fast, near-silent autofocus and the 7.5-inch minimum focus distance enables detailed close-ups. This lens is best for Sony E-mount APS-C shooters who need a single, stabilized workhorse for everything from low-light events to portrait and macro-style detail work.
Snapshot
Pros & Cons
Pros
- Strong macro (94th percentile) 94th
- Strong versatility (90th percentile) 90th
- Strong aperture (86th percentile) 86th
- Strong bokeh (84th percentile) 84th
Cons
- Below average build (3rd percentile)
- Below average optical (19th percentile)
- Below average social proof (25th percentile)
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Zoom |
| Focal Length Min | 17 |
| Focal Length Max | 70 |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/2.8 |
Build
| Mount | Tamron |
| Weight | 1.6 kg / 3.6 lbs |
AF & Stabilization
| AF Type | RXD |
| Stabilization | Yes |
Focus
| Min Focus Distance | 70 |
vs Competition
| Spec | Tamron Di III 17-70mm f/2.8 -A VC RXD | Sigma Contemporary 18-50mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12035 | Yongnuo YN YN23mm F1.4S DA DSM | Meike MIX Series 85mm F1.4 II | Nikon NIKKOR Z 17-28mm f/2.8 |
|---|---|---|---|---|---|---|
| Focal Length | 17-70mm | 18-50mm | 12-35mm | 23mm | 85mm | 17-28mm |
| Max Aperture | f/2.8 | f/2.8 | f/2.8 | f/1.4 | f/1.4 | f/2.8 |
| Mount | Tamron | Sony E | Micro Four Thirds | Sony E | Sony E | Nikon Z |
| Stabilization | true | false | true | true | true | false |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 1642 | 290 | 306 | 368 | 914 | 450 |
| AF Type | RXD | stepping motor | Autofocus | DSM digital stepping motor | Hyper STM | Stepping Motor |
| Lens Type | zoom | zoom | zoom | prime | prime | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Tamron Di III 17-70mm f/2.8 -A VC RXD | 53.7 | 84.2 | 2.5 | 94.1 | 18.5 | 86.1 | 89.7 | 24.8 | 80.4 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 85 | 84.2 | 84.8 | 90.1 | 81.1 | 86.1 | 78.5 | 90.4 | 35.3 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.7 | 84.2 | 84 | 49.6 | 85.7 | 86.1 | 80.5 | 86.3 | 96.6 |
| Yongnuo YN YN23mm F1.4S DA DSM Compare | 85 | 97 | 79.5 | 79.3 | 67.3 | 97.1 | 33.5 | 98.8 | 80.4 |
| Meike MIX Series 85mm F1.4 II Compare | 85 | 98.3 | 44.1 | 92.7 | 72.6 | 97.1 | 33.5 | 77.8 | 80.4 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 85 | 88.8 | 73.7 | 84.2 | 87.5 | 86.1 | 67.7 | 68.6 | 35.3 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.