The Sony Alpha 1 is 7.6 mm narrower, 13.1 mm shorter, 4.7 mm thinner and 273 g lighter than the Pentax K-1 Mark II.
| Pentax K-1 Mark II | Sony Alpha 1 | |
|---|---|---|
| Size (W × H × D) | 136.5 × 110 × 85.5 mm | 128.9 × 96.9 × 80.8 mm |
| Weight | 1,010 g | 737 g |
| Lens | Pentax K | Sony E |
| Announced | 2018 | 2021 |