EOS R6 Mark IIIvs A7 III
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.
All-Round Photography & Video — A7 III (2018): Still one of the best all-round cameras money can buy — particularly strong used. The A7 III proved that full-frame doesn't have to mean compromises, and nothing at this price point has meaningfully beaten it.
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
A7 III (2018)
- Enthusiast photographers upgrading from APS-C for the first time
- Working photographers who need reliable AF and weather sealing
- Anyone who shoots in low light regularly
- Hybrid shooters needing both stills and video performance
Quick take: The eos r6 mark iii has the highest resolution at 32mp; the a7 iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | A7 III (2018) |
|---|---|---|
| Price | £2,799 | £1,699 |
| Sensor | 32.5MP full-frame stacked CMOS | 24.2MP Full-Frame Exmor R BSI CMOS |
| Resolution | 32.5MP | 24.2MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 4K/30p (6K oversampled), 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, 693 points, real-time Eye AF & animal AF |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | 5-axis IBIS, 5 stops |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 10fps with AF/AE tracking |
| Battery Life | ~580 shots (CIPA, LP-E6P) | ~710 shots (CIPA) |
| Weight | 670g (body with battery and card) | 565g (body, battery, card) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 126.9 × 95.6 × 73.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | EVF, 2.36M dots, 0.78× magnification |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.0" tilting touchscreen, 921k dots |
| Mount | Canon RF | Sony E-mount |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | Dual SD (UHS-II slot 1, UHS-I slot 2) |
| Connectivity | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE | USB-C (USB 3.2), Wi-Fi, Bluetooth, NFC |
Suitability by genre
| Genre | EOS R6 Mark III | A7 III |
|---|---|---|
| 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 →
More comparisons with EOS R6 Mark III
Camera family history