The Olympus OM-1 is 6.4 mm narrower, 16.4 mm shorter, 11.9 mm thinner and 170 g lighter than the Leica SL3.
| Leica SL3 | Olympus OM-1 | |
|---|---|---|
| Size (W × H × D) | 141.2 × 108 × 84.6 mm | 134.8 × 91.6 × 72.7 mm |
| Weight | 769 g | 599 g |
| Lens | L-Mount | Micro Four Thirds |
| Sensor | Full frame | Four Thirds |
| Announced | 2024 | 2022 |