GFX 50S IIvs Leica SL3vs 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.
Professional & Luxury Hybrid Shooters — Leica SL3 (2024): Leica's most capable mirrorless — 60MP, 30fps burst, 8K ProRes, and 7.5-stop IBIS with L-mount's growing lens ecosystem.
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
Leica SL3 (2024)
- You want Leica image quality with the convenience of autofocus and interchangeable lenses
- You shoot portraits, commercial, or editorial and want the best Leica system camera
- You plan to use Leica M lenses via adapter alongside native SL glass
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 leica sl3 has the highest resolution at 60mp; the a6400 is the most affordable; only the gfx 50s ii, leica sl3 are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | Leica SL3 (2024) | A6400 (2019) |
|---|---|---|---|
| Price | £2,999 | £6,499 | £899 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 60MP full-frame BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 51.4MP | 60.0MP | 24.2MP |
| Video | 4K/30p (cropped) | 8K/30p, 4K/60p, Apple ProRes | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect, 425 points | Phase-detect AF with subject/face/eye detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 6.5 stops | 7.5-stop IBIS | None (no IBIS) |
| Burst Rate | 3fps | 30fps electronic | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~440 shots (CIPA) | 410 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 900g body only | 875g body only | 403g (body, battery, card) |
| Dimensions | 150.0 × 104.2 × 87.2mm | 146.0 × 104.0 × 42.0mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes | No |
| Viewfinder | EVF, 3.69M dots, 0.77× magnification | 0.78" OLED EVF, 5.76M dots | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2" tilting touchscreen | 3.2" fixed touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Fujifilm G-mount (medium format) | Leica L-mount | 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 3.1, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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