GFX 50S IIvs OM System OM-1 Mark IIvs A6400
OM System
OM System OM-1 Mark II (2024)
From £1999
Best for Wildlife, birds & outdoor sports
View OM System OM-1 Mark II
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, Birds & Outdoor Sports — OM System OM-1 Mark II (2024): OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.
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 System OM-1 Mark II (2024)
- You shoot wildlife, birds in flight, or fast-moving action where tracking accuracy is critical
- You need extreme weather sealing for shooting in rain, dust, mud, or freezing cold
- You're invested in the MFT ecosystem and want the absolute best body available
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 system om-1 mark ii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | OM System OM-1 Mark II (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £2,999 | £1,999 | £899 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 20MP Micro Four Thirds Live MOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 51.4MP | 20.0MP | 24.2MP |
| Video | 4K/30p (cropped) | 4K/60p, 1080p/240p, 4K HLG | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect, 425 points | AI subject detection AF (birds, animals, motorsport) | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 6.5 stops | 8.5-stop IBIS | None (no IBIS) |
| Burst Rate | 3fps | 120fps with AF tracking | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~440 shots (CIPA) | 520 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 900g body only | 599g 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 | 0.83" OLED EVF, 5.76M dots, 120fps | 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 | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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