GFX 50S IIvs Z6 IIIvs 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.
Hybrid Video & Action — Z6 III (2024): Partial-stacked FF sensor for near-zero blackout, 6K RAW video, and 60fps burst — Nikon's most capable hybrid.
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
Z6 III (2024)
- You need the best all-round full-frame camera in Nikon's Z system
- You shoot in challenging or low light and need exceptional high-ISO performance
- You want a hybrid body that genuinely excels at both professional stills and video
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, z6 iii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | Z6 III (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £2,999 | £2,199 | £899 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 24.5MP Full-frame Partial-stacked CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 51.4MP | 24.5MP | 24.2MP |
| Video | 4K/30p (cropped) | 6K/60p RAW, 4K/120p, 4K/60p oversampled, N-Log, 10-bit | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect, 425 points | Phase-detect, 273 points, subject detection (human/animal/vehicle/aircraft) | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 6.5 stops | 5-axis IBIS, 6.0 stops | None (no IBIS) |
| Burst Rate | 3fps | 20fps mechanical, 60fps electronic | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~440 shots (CIPA) | ~380 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 900g body only | 760g body only | 403g (body, battery, card) |
| Dimensions | 150.0 × 104.2 × 87.2mm | 138.5 × 101.5 × 74.0mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes | No |
| Viewfinder | EVF, 3.69M dots, 0.77× magnification | EVF, 5.76M dots, 0.90× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2" tilting touchscreen | 3.2" fully articulating touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Fujifilm G-mount (medium format) | Nikon Z-mount (full-frame) | Sony E-mount |
| Memory Cards | Dual SD UHS-II slots | Dual slots: CFexpress Type B + SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C 3.2, Bluetooth, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC |
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