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Quick take: The OM-5 Mark II has the highest resolution at 20MP; the OM-5 Mark II is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
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OM-1 Mark II — Wildlife, Birds & Outdoor Sports: OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.
| Specification | OM-1 Mark IIOM System · 2024 | OM-5 Mark IIOM System · 2025 |
|---|---|---|
| Price | £1,999 | £880Best |
| Sensor | 20MP Micro Four Thirds Live MOS | 20.4MP Four Thirds Live MOS |
| Resolution | 20.0MP | 20.4MPBest |
| Video | 4K/60p, 1080p/240p, 4K HLG | 4K/30p, OM-Log400 |
| Autofocus | AI subject detection AF (birds, animals, motorsport) | Phase-hybrid AF (121 cross-type points) |
| Stabilisation | 8.5-stop IBIS | Up to 7.5-stop Sync IS (6.5-stop body-only) |
| Burst Rate | 120fps with AF trackingBest | 10fps (AF tracking), 30fps (locked) |
| Battery Life | 520 shots (CIPA)Best | 310 shots (CIPA) |
| Weight | 599g (body only) | 370g (body only)Best |
| Dimensions | 134.8 × 91.6 × 72.7mm | — |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.83" OLED EVF, 5.76M dots, 120fps | EVF, 2.36M dots, 1.37x magnification |
| Screen | 3.0" fully articulating touchscreen | Fully articulating touchscreen |
| Mount | Micro Four Thirds | Micro Four Thirds |
| Memory Cards | Dual SD UHS-II | Single SD (UHS-II) |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →