Canon EOS R3vs EOS R6 Mark III
Canon
Canon EOS R3 (2021)
Starting from £5999 new
Best for Sports & photojournalism professionals
View Canon EOS R3
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?
Sports & Photojournalism Professionals — Canon EOS R3 (2021): The pinnacle of Canon's mirrorless lineup for speed — Eye Control AF and 30fps burst in the most rugged body Canon has ever produced.
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.
Who should buy what
Canon EOS R3 (2021)
- Professional sports and photojournalism photographers
- Canon users who need the fastest burst and most reliable AF in the system
- R5 users who want a pro-grade grip and faster shooting speed
- Event photographers who need eye-controlled AF and dual card slots
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
Quick take: The eos r6 mark iii has the highest resolution at 32mp; the eos r6 mark iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Canon EOS R3 (2021) | EOS R6 Mark III (2025) |
|---|---|---|
| Price | £5,999 | £2,799 |
| Sensor | 24.1MP full-frame BSI stacked CMOS | 32.5MP full-frame stacked CMOS |
| Resolution | 24.1MP | 32.5MP |
| Video | 6K RAW, 4K/120p, 1080p/180p | 4K 60fps oversampled from 7K, 6K RAW internal |
| Autofocus | Dual Pixel CMOS AF II with Eye Control AF | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking |
| Stabilisation | 8-stop IBIS | In-body 5-axis IS, up to 8.5 stops |
| Burst Rate | 30fps electronic / 12fps mechanical | 40fps (electronic shutter), 12fps (mechanical) |
| Battery Life | 620 shots (CIPA) | ~580 shots (CIPA, LP-E6P) |
| Weight | 1015g body only | 670g (body with battery and card) |
| Dimensions | 150.0 × 142.6 × 87.2mm | 138.4 × 98.4 × 88.4mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.76" OLED EVF, 5.76M dots, 120fps | EVF, 5.76M-dot, up to 120fps |
| Screen | 3.2" fully articulating touchscreen | 3.2-inch vari-angle touchscreen, 2.1M-dot |
| Mount | Canon RF | Canon RF |
| Memory Cards | Dual CFexpress Type B | Dual SD / SDHC / SDXC (UHS-II) |
| Connectivity | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE |
Suitability by genre
| Genre | Canon EOS R3 | EOS R6 Mark III |
|---|---|---|
| Sports & Action | ||
| Wildlife | ||
| Photojournalism | — | |
| Vlogging & Video | ||
| Wedding & Events | — | |
| Travel | ||
| Portrait | — | |
| Landscape | — | |
| Street | — | |
| Casual | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with Canon EOS R3
Camera family history