The Canon EOS-1D X is 21.5 mm wider, 53.6 mm taller, 2.8 mm thinner and 200 g heavier than the Pentax K-1.
| Pentax K-1 | Canon EOS-1D X | |
|---|---|---|
| Size (W × H × D) | 136.5 × 110 × 85.5 mm | 158 × 163.6 × 82.7 mm |
| Weight | 1,010 g | 1,210 g |
| Lens | Pentax K | Canon EF |
| Sensor | — | Full frame |
| Announced | 2016 | 2011 |