OM-1 IIvs A6400
VS
Which should you buy?
Wildlife & Action — OM-1 II (2024): 120fps burst, 8-stop IBIS, and IP53 sealing — the most capable wildlife and action camera in the Micro Four Thirds world.
Content Creation & Vlogging — A6400 (2019): The best value APS-C Sony you can buy — especially used. Real-time Eye AF at this price point was transformative when it launched and still makes it one of the most reliable autofocus systems in the lineup.
Who should buy what
OM-1 II (2024)
- You shoot wildlife, birds, or fast action and want the best MFT autofocus available
- You need strong weather sealing without the weight of a full-frame sports body
- You're in the MFT system and want a flagship-level body upgrade
A6400 (2019)
- Vloggers and content creators who need a flip screen and reliable AF
- Photographers upgrading from a compact or smartphone
- Beginners who want room to grow into a full E-mount lens ecosystem
- Anyone prioritising autofocus performance at an accessible price
Quick take: The a6400 has the highest resolution at 24mp; the a6400 is the most affordable; only the om-1 ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-1 II (2024) | A6400 (2019) |
|---|---|---|
| Price | £1,499 | £899 |
| Sensor | 20.4MP Micro Four Thirds Stacked BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 20.4MP | 24.2MP |
| Video | 4K/120p Cinema4K, Apple ProRes RAW (with recorder) | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Quad-Pixel phase-detect, 1053 points, AI subject recognition (birds/animals) | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 8.0 stops (Dual IS) | None (no IBIS) |
| Burst Rate | 120fps electronic (blackout-free), 15fps mechanical | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~520 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 561g body only | 403g (body, battery, card) |
| Dimensions | 134.8 × 91.6 × 72.7mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF, 5.76M dots, 0.83× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Micro Four Thirds | Sony E-mount |
| Memory Cards | Dual SD UHS-II slots | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC |
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