EOS R6 Mark IIIvs A6600
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
Sony
A6600 (2019)
Starting from £1299 new
Best for Hybrid photography, travel & video on Sony APS-C
View A6600
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.
Hybrid Photography, Travel & Video On Sony Aps-C — A6600 (2019): The APS-C Sony that has everything — IBIS, real-time Eye AF, excellent battery life, and 4K/30p in a weather-sealed body.
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
A6600 (2019)
- Sony APS-C shooters who need IBIS — the only A6000-series body to offer it
- Hybrid photographers who want the best of stills and video from a compact E-mount body
- A6400 or A6100 owners who want IBIS and a headphone jack for video work
- Travel photographers who need compact full-featured weather-sealed performance
Quick take: The eos r6 mark iii has the highest resolution at 32mp; the a6600 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | A6600 (2019) |
|---|---|---|
| Price | £2,799 | £1,299 |
| Sensor | 32.5MP full-frame stacked CMOS | 24.2MP APS-C Exmor CMOS |
| Resolution | 32.5MP | 24.2MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 4K/30p (no crop), 1080p/120p |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | Real-time Eye AF, real-time tracking — inherited from A9 |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | 5-axis IBIS — 5 stops |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 11fps continuous with AF/AE |
| Battery Life | ~580 shots (CIPA, LP-E6P) | ~810 shots (CIPA) — large NP-FZ100 battery |
| Weight | 670g (body with battery and card) | 503g body only |
| Dimensions | 138.4 × 98.4 × 88.4mm | 120 × 66.9 × 69.3mm |
| Weather Sealed | Yes | Yes |
| 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" touchscreen, tilting |
| Mount | Canon RF | Sony E-mount (APS-C) |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | Single SD UHS-I slot |
| Connectivity | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE | USB-C, Bluetooth, Wi-Fi, 3.5mm mic & headphone jacks |
Suitability by genre
| Genre | EOS R6 Mark III | A6600 |
|---|---|---|
| Sports & Action | — | |
| Wildlife | ||
| Vlogging & Video | ||
| Portrait | ||
| Landscape | — | |
| Travel | ||
| Street | ||
| Casual | — | |
| Sports | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with EOS R6 Mark III
Camera family history