The Sigma BF is 6.1 mm wider, 1.7 mm taller, 26.6 mm thinner and 68 g lighter than the Sony Alpha a7C II.
| Sony Alpha a7C II | Sigma BF | |
|---|---|---|
| Size (W × H × D) | 124 × 71.1 × 63.4 mm | 130.1 × 72.8 × 36.8 mm |
| Weight | 514 g | 446 g |
| Lens | Sony E | L-Mount |
| Announced | 2023 | 2025 |