EOS R6 Mark IIIvs A6400
Canon
EOS R6 Mark III (2025)
Starting from £2799 new
Best for Hybrid photo & video professionals, sports and wildlife shooters
View EOS R6 Mark III
GearScore™ Verdict — Which should you buy?
Hybrid Photo & Video Professionals, Sports And Wildlife Shooters — EOS R6 Mark III (2025): The EOS R6 Mark III takes everything that made the Mark II a hybrid favourite and pushes it further — a faster stacked sensor, smarter autofocus, and genuinely professional video specs. It's the most complete all-rounder in Canon's RF full-frame lineup, sitting just below the R5 II in resolution while matching it for speed.
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
EOS R6 Mark III (2025)
- Working photographers who need a single body for both stills and serious video work
- Sports and wildlife shooters who need 40fps burst shooting with reliable subject tracking
- Hybrid content creators producing 4K and 6K footage alongside high-resolution stills
- Enthusiasts upgrading from the EOS R6 Mark II who want faster AF and more resolution
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 eos r6 mark iii has the highest resolution at 32mp; the a6400 is the most affordable; only the eos r6 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | A6400 (2019) |
|---|---|---|
| Price | £2,799 | £899 |
| Sensor | 32.5MP full-frame stacked CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 32.5MP | 24.2MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | None (no IBIS) |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~580 shots (CIPA, LP-E6P) | ~410 shots (CIPA) |
| Weight | 670g (body with battery and card) | 403g (body, battery, card) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF | Sony E-mount |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE | Micro-USB, Wi-Fi, Bluetooth, NFC |
Suitability by genre
| Genre | EOS R6 Mark III | A6400 |
|---|---|---|
| Sports & Action | — | |
| Wildlife | ||
| Vlogging & Video | — | |
| Portrait | ||
| Landscape | — | |
| Travel | ||
| Street | ||
| Casual | — | |
| Video | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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