The Sony Alpha a6400 is 29 mm narrower, 82.6 mm shorter, 30.8 mm thinner and 937 g lighter than the Nikon Z9.
| Nikon Z9 | Sony Alpha a6400 | |
|---|---|---|
| Size (W × H × D) | 149 × 149.5 × 90.5 mm | 120 × 66.9 × 59.7 mm |
| Weight | 1,340 g | 403 g |
| Lens | Nikon Z | Sony E |
| Announced | 2022 | 2019 |