Here is a quick specifications comparison between the Nikon NIKKOR Z 14-30mm f/4 S lens and the upcoming Tamron 16-30mm f//2.8 Di III VXD G2 lens for Nikon Z-mount:
Specification | Nikkor Z 14-30mm f/4 | Tamron 16-30mm f/2.8 Di III VXD G2 |
| Prie | $1,196 | around $1,000 |
| Focal Length Range | 14 -30mm | 16-30 |
| Zoom Ratio | 2.1x | 1.88x |
| Maximum Aperture | f/4 | f/2.8 |
| Minimum Aperture | f/22 | f/16 |
| Format | FX | FX |
| Maximum Reproduction Ratio | 0.16x | 0.16x |
| Lens Elements | 14 | 16 |
| Lens Groups | 12 | 12 |
| Compatible Format(s) | FX, DX | FX, DX |
| Diaphragm Blades | 7 | 9 |
| Autofocus | Yes | Yes |
| Internal Focusing | Yes | Yes |
| Minimum Focus Distance | 28cm | 19cm |
| Focus Mode | Autofocus, Manual | Autofocus, Manual |
| Filter Size | 82mm | 67mm |
| Accepts Filter Type | Screw-in | Screw-in |
| Approx. Dimensions (Diameter x Length) | 3.5 in. 89 mm x3.3 in. 85mm | Length 105mm |
| Approx. Weight | 17.1 oz. 485g | 450g |
| Lens Type | Zoom | Zoom |
Tamron to announce a new 16-30mm f/2.8 Di III VXD G2 lens for Nikon Z-mount
