EOS R6 Mark IIIvs A7R IV
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.
Landscape, Studio, Commercial — A7R IV (2019): 61MP in a mirrorless body — the resolution benchmark.
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
A7R IV (2019)
- Landscape photographers who print large
- Studio shooters needing maximum detail
Quick take: The a7r iv has the highest resolution at 61mp; the a7r iv is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | A7R IV (2019) |
|---|---|---|
| Price | £2,799 | £2,199 |
| Sensor | 32.5MP full-frame stacked CMOS | Full-frame BSI Exmor R CMOS 35mm |
| Resolution | 32.5MP | 61.0MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 4K 30fps |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | 567-point phase-detect, real-time tracking |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | 5-axis IBIS, 5.5 stops |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 10fps |
| Battery Life | ~580 shots (CIPA, LP-E6P) | 670 shots (CIPA) |
| Weight | 670g (body with battery and card) | 665g (body only) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 128.9 × 96.4 × 77.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | EVF 0.78× 5.76M-dot |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.0" tilting touchscreen, 1.44M-dot |
| Mount | Canon RF | Sony E-Mount |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | 2× SD UHS-II / CFexpress Type A |
| Connectivity | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 |
Suitability by genre
| Genre | EOS R6 Mark III | A7R IV |
|---|---|---|
| Sports & Action | — | |
| Wildlife | ||
| Vlogging & Video | ||
| Portrait | ||
| Landscape | ||
| Travel | ||
| Street | ||
| Casual | — | |
| Architecture | — | |
| Wedding & Events | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history