The Sony Alpha a6400 is 2 mm narrower, 2.1 mm shorter, 15.4 mm thinner and 90 g lighter than the Sony Alpha a6700.
| Sony Alpha a6700 | Sony Alpha a6400 | |
|---|---|---|
| Size (W × H × D) | 122 × 69 × 75.1 mm | 120 × 66.9 × 59.7 mm |
| Weight | 493 g | 403 g |
| Lens | Sony E | Sony E |
| Announced | 2023 | 2019 |