Tamron 17-70mm f/2.8 Di III-A VC RXD
~$750 USD
Specifications
| Focal length | 17-70mm |
| Max aperture | f/2.8 |
| Sweet spot | f/4 |
| Aperture blades | 9 (circular) |
| Max magnification | 0.2x |
| Min focus distance | 190mm |
| AF motor | LM |
| OIS | Yes |
| Weather sealed | Yes |
| Weight | 525g |
| Diameter | 74.4mm |
| Length | 119.3mm |
| Filter thread | 67mm |
| Year | 2021 |
Optical Quality 12/14
| Center (wide open) | 1.5 |
| Corner (wide open) | 1.0 |
| Center (stopped) | 1.5 |
| Corner (stopped) | 1.5 |
| Coma | 2.0 |
| Astigmatism | 1.5 |
| Spherical aberration | 0.5 |
| Longitudinal CA | 1.5 |
| Lateral CA | 2.0 |
| Distortion | 0.5 |
| Bokeh | 0.5 |
| Flare resistance | 0.5 |
0-2 scale. See scoring methodology.