EOS R6 Mark IIIvs A7R VI
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
A7R VI (2025)
Starting from £4399 new
Best for Studio, landscape and commercial photographers needing maximum resolution
View A7R VI
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.
Studio, Landscape And Commercial Photographers Needing Maximum Resolution — A7R VI (2025): The A7R VI cements its place as the resolution flagship of the Sony full-frame range — 61MP, AI-driven autofocus, and 8K video make it as capable for video and action work as it is for studio and landscape photography. The price reflects its position at the top of the lineup, but the capability is hard to match.
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 VI (2025)
- Studio and commercial photographers who need maximum resolution for large prints and heavy cropping
- Landscape photographers who want best-in-class dynamic range and detail
- Hybrid shooters who need 8K video alongside a 61MP stills sensor
- Professionals upgrading from the A7R V who want faster AI-driven autofocus
Quick take: The a7r vi has the highest resolution at 61mp; the eos r6 mark iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | A7R VI (2025) |
|---|---|---|
| Price | £2,799 | £4,399 |
| Sensor | 32.5MP full-frame stacked CMOS | 61MP full-frame stacked back-illuminated CMOS |
| Resolution | 32.5MP | 61.0MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 8K 30fps, 4K 120fps oversampled |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | AI processing unit — subject recognition for people, animals, birds and vehicles across the frame |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | In-body 5-axis IS, up to 8.5 stops |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 8fps mechanical / 7fps electronic with full AF/AE tracking |
| Battery Life | ~580 shots (CIPA, LP-E6P) | ~530 shots (CIPA, NP-FZ100) |
| Weight | 670g (body with battery and card) | 723g (body with battery and card) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 131.3 × 96.9 × 82.8mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | EVF, 9.44M-dot, up to 120fps |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.2-inch 4-axis multi-angle touchscreen, 3.69M-dot |
| Mount | Canon RF | Sony FE (full-frame E-mount) |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | Dual slots — CFexpress Type A / SD (UHS-II) |
| Connectivity | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE | USB-C (10Gbps), Wi-Fi 6E, Bluetooth 5.0, 2.5GbE |
Suitability by genre
| Genre | EOS R6 Mark III | A7R VI |
|---|---|---|
| Sports & Action | ||
| Wildlife | ||
| Vlogging & Video | ||
| Portrait | ||
| Landscape | ||
| Travel | ||
| Street | ||
| Casual |
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