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| Spec | OM-1 Mark II | OM-3 |
|---|---|---|
| Year | 2024 | 2025 |
| Form Factor | SLR-style | Rangefinder |
| MP | 20.4 | 20.4 |
| Sensor | Stacked BSI | Stacked BSI |
| IBIS | ✓ | ✓ |
| IBIS Stops | 8.5 | 6.5 |
| Max ISO | 102400 | 102400 |
| EVF | ✓ | ✓ |
| EVF Dots | 5760k | 2360k |
| LCD | 3.0 in | 3.0 in |
| LCD Dots | 1620k | 1620k |
| LCD Type | Free-angle | Free-angle |
| Touch | ✓ | ✓ |
| Max Video | 4K/60p | C4K/60p |
| Video FPS | 60p | 60p |
| Bit Depth | 10-bit | 10-bit |
| Bitrate Mbps | 202 | 202 |
| Codec | H.264 / H.265 | H.264 / H.265 |
| Rec Limit | Unlimited | Unlimited |
| Burst fps | 120 | 120 |
| AF Type | Hybrid PDAF | Hybrid PDAF |
| AF Points | 1053 | 1053 |
| Cards | 2 | 1 |
| Card Type | SD (UHS-II) | SD (UHS-II) |
| Mic Jack | ✓ | ✓ |
| Headphone | ✓ | ✓ |
| USB | USB-C | USB-C |
| HDMI | Micro-HDMI | Micro-HDMI |
| Wi-Fi | ✓ | ✓ |
| BT | ✓ | ✓ |
| GPS | ✓ | ✗ |
| Weather | ✓ | ✓ |
| LUT | ✗ | ✗ |
| Log | ✓ | ✓ |
| Flash | ✗ | ✗ |
| Hot Shoe | ✓ | ✓ |
| Battery | BLX-1 | BLX-1 |
| Batt Life | 520 | 590 |
| Weight g | 511 | 432 |