The OM System OM-3 is 0.5 mm wider, 8.6 mm taller, 7.3 mm deeper and 34 g lighter than the Leica M11-P.
| Leica M11-P | OM System OM-3 | |
|---|---|---|
| Size (W × H × D) | 138.8 × 80.3 × 38.5 mm | 139.3 × 88.9 × 45.8 mm |
| Weight | 530 g | 496 g |
| Lens | Leica M | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2023 | 2025 |