GFX 50S IIvs OM-1 IIvs A6400
Which should you buy?
Studio & Portrait Specialists — GFX 50S II (2021): Medium format quality at the most accessible price ever — 51MP detail and tonal richness no APS-C or full-frame body can replicate.
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
GFX 50S II (2021)
- You want to experience medium format without a five-figure investment
- You shoot landscape, architecture, or portraits where resolution and tonal depth matter
- You're in the Fujifilm ecosystem and want to step up to a larger sensor
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 gfx 50s ii has the highest resolution at 51mp; the a6400 is the most affordable; only the gfx 50s ii, om-1 ii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | OM-1 II (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £2,999 | £1,499 | £899 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 20.4MP Micro Four Thirds Stacked BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 51.4MP | 20.4MP | 24.2MP |
| Video | 4K/30p (cropped) | 4K/120p Cinema4K, Apple ProRes RAW (with recorder) | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect, 425 points | 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, 6.5 stops | 5-axis IBIS, 8.0 stops (Dual IS) | None (no IBIS) |
| Burst Rate | 3fps | 120fps electronic (blackout-free), 15fps mechanical | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~440 shots (CIPA) | ~520 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 900g body only | 561g body only | 403g (body, battery, card) |
| Dimensions | 150.0 × 104.2 × 87.2mm | 134.8 × 91.6 × 72.7mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes | No |
| Viewfinder | EVF, 3.69M dots, 0.77× magnification | EVF, 5.76M dots, 0.83× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2" tilting touchscreen | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Fujifilm G-mount (medium format) | Micro Four Thirds | Sony E-mount |
| Memory Cards | Dual SD UHS-II slots | Dual SD UHS-II slots | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C, Bluetooth, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC |
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