Here are the specifications of the new Tamron 20-40mm f/2.8 Di III VXD lens for Sony E-mount courtesy of B&H Photo:
- E-Mount Lens/Full-Frame Format
- Maximum Aperture: f/2.8
- VXD Linear Motor Focus Mechanism
- Minimum Focusing Distance: 6.7"
- Moisture-Resistant Construction
- 67mm Front Filter Size
| Focal Length | 20 to 40mm |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | Not Specified by Manufacturer |
| Lens Mount | Sony E |
| Lens Format Coverage | Full-Frame |
| Minimum Focus Distance | 6.7" / 17 cm |
| Maximum Magnification | 0.26x |
| Macro Reproduction Ratio | 1:3.8 |
| Focus Type | Autofocus |
| Image Stabilization | No |
| Filter Size | 67 mm (Front) |
| Weight | 12.9 oz / 365 g |
Development announcement: Tamron 20-40mm f/2.8 Di III VXD lens
