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Quick take: The GH5 II has the highest resolution at 20MP; the GH5 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 | GH5 IILumix · 2021 | OM-1 Mark IIOM System · 2024 |
|---|---|---|
| Price | £979Best | £2,049 |
| Sensor | 20.3MP Four Thirds Live MOS | 20MP Micro Four Thirds Live MOS |
| Resolution | 20.3MPBest | 20.0MP |
| Video | Unlimited 6K/4K recording, 4K/60p, 10-bit 4:2:2, V-Log | 4K/60p, 1080p/240p, 4K HLG |
| Autofocus | Contrast-detect AF with Depth-from-Defocus (225 areas), face/eye detection | AI subject detection AF (birds, animals, motorsport) |
| Stabilisation | 5-axis IBIS with Dual I.S. 2 | 8.5-stop IBIS |
| Burst Rate | 9fps | 120fps with AF trackingBest |
| Battery Life | 410 shots (CIPA) | 520 shots (CIPA)Best |
| Weight | 727g (with battery and card) | 599g (body only)Best |
| Dimensions | — | 134.8 × 91.6 × 72.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF | 0.83" OLED EVF, 5.76M dots, 120fps |
| Screen | Fully articulating touchscreen | 3.0" fully articulating touchscreen |
| Mount | Micro Four Thirds | Micro Four Thirds |
| Memory Cards | Dual SD (UHS-II) | Dual SD UHS-II |
| Connectivity | USB 3.1, full-size HDMI, 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 →