Canon EOS R3vs GFX 50S IIvs A6400
Canon
Canon EOS R3 (2021)
From £5999
Best for Sports & photojournalism professionals
View Canon EOS R3
Which should you buy?
Sports & Photojournalism Professionals — Canon EOS R3 (2021): The pinnacle of Canon's mirrorless lineup for speed — Eye Control AF and 30fps burst in the most rugged body Canon has ever produced.
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.
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
Canon EOS R3 (2021)
- You shoot sport, motorsport, wildlife, or news at a professional level
- You need Canon's most reliable and fastest autofocus available
- You need extreme weather sealing for demanding shooting conditions
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
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 canon eos r3, gfx 50s ii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Canon EOS R3 (2021) | GFX 50S II (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £5,999 | £2,999 | £899 |
| Sensor | 24.1MP full-frame BSI stacked CMOS | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 51.4MP | 24.2MP |
| Video | 6K RAW, 4K/120p, 1080p/180p | 4K/30p (cropped) | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II with Eye Control AF | Phase-detect, 425 points | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 8-stop IBIS | 5-axis IBIS, 6.5 stops | None (no IBIS) |
| Burst Rate | 30fps electronic / 12fps mechanical | 3fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | 620 shots (CIPA) | ~440 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 1015g body only | 900g body only | 403g (body, battery, card) |
| Dimensions | 150.0 × 142.6 × 87.2mm | 150.0 × 104.2 × 87.2mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes | No |
| Viewfinder | 0.76" OLED EVF, 5.76M dots, 120fps | EVF, 3.69M dots, 0.77× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2" fully articulating touchscreen | 3.2" tilting touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF | Fujifilm G-mount (medium format) | Sony E-mount |
| Memory Cards | Dual CFexpress Type B | Dual SD UHS-II slots | Single SD UHS-I |
| Connectivity | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN | USB-C, Bluetooth, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC |
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