EOS R6 Mark IIIvs A7 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.
Portrait & Wedding Photography — A7 IV (2021): The full-frame portrait benchmark — 33MP, AI Eye AF, and exceptional skin-tone rendering in a pro-grade hybrid 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
A7 IV (2021)
- Working photographers who want a reliable full-frame all-rounder
- Portrait, wedding, and event photographers needing 33MP and fast AF
- A7 III owners ready for a major upgrade in resolution, AF, and video
- Hybrid shooters who want 4K/60p and 33MP stills in one dependable body
Quick take: The a7 iv has the highest resolution at 33mp; the a7 iv is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | A7 IV (2021) |
|---|---|---|
| Price | £2,799 | £2,299 |
| Sensor | 32.5MP full-frame stacked CMOS | 33MP Full-frame BSI Exmor R CMOS |
| Resolution | 32.5MP | 33.0MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 4K/60p oversampled, 10-bit internal, S-Log3, S-Cinetone |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | 759-point phase-detect, AI subject recognition |
| 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 mechanical, 30fps electronic |
| Battery Life | ~580 shots (CIPA, LP-E6P) | ~580 shots (CIPA) |
| Weight | 670g (body with battery and card) | 659g body only |
| Dimensions | 138.4 × 98.4 × 88.4mm | 131.3 × 96.4 × 79.8mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | EVF, 3.69M dots, 0.78× magnification |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.0" vari-angle touchscreen |
| 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 (3.2 Gen 2), Bluetooth, Wi-Fi |
Suitability by genre
| Genre | EOS R6 Mark III | A7 IV |
|---|---|---|
| Sports & Action | ||
| Wildlife | — | |
| Vlogging & Video | ||
| Portrait | — | |
| Landscape | ||
| Travel | — | |
| Street | — | |
| Casual | — | |
| Studio Portraits | — | |
| Outdoor Portraits | — | |
| 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